140769787249 has 135 divisors (see below), whose sum is σ = 193927064139. Its totient is φ = 102112526880.

The previous prime is 140769787247. The next prime is 140769787273. The reversal of 140769787249 is 942787967041.

It is a happy number.

The square root of 140769787249 is 375193.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 20823933025 + 119945854224 = 144305^2 + 346332^2 .

It is not a de Polignac number, because 140769787249 - 2¹ = 140769787247 is a prime.

It is a super-2 number, since 2×140769787249² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140769787247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 4540960864 + ... + 4540960894.

Almost surely, 2^140769787249 is an apocalyptic number.

140769787249 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

140769787249 is the 375193-rd square number.

140769787249 is the 187597-th centered octagonal number.

It is an amenable number.

140769787249 is a deficient number, since it is larger than the sum of its proper divisors (53157276890).

140769787249 is an frugal number, since it uses more digits than its factorization.

140769787249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 42674688, while the sum is 64.

Multiplying 140769787249 by its sum of digits (64), we get a square (9009266383936 = 3001544²).

The spelling of 140769787249 in words is "one hundred forty billion, seven hundred sixty-nine million, seven hundred eighty-seven thousand, two hundred forty-nine".