136244406769 has 9 divisors (see below), whose sum is σ = 143799975417. Its totient is φ = 129067004484.

The previous prime is 136244406743. The next prime is 136244406787. The reversal of 136244406769 is 967604442631.

The square root of 136244406769 is 369113.

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

It is not a de Polignac number, because 136244406769 - 2⁵ = 136244406737 is a prime.

It is a super-2 number, since 2×136244406769² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136244406869) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7003434 + ... + 7022860.

Almost surely, 2^136244406769 is an apocalyptic number.

136244406769 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

136244406769 is the 369113-rd square number.

136244406769 is the 184557-th centered octagonal number.

It is an amenable number.

136244406769 is a deficient number, since it is larger than the sum of its proper divisors (7555568648).

136244406769 is an frugal number, since it uses more digits than its factorization.

136244406769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38892 (or 19446 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 52.

The spelling of 136244406769 in words is "one hundred thirty-six billion, two hundred forty-four million, four hundred six thousand, seven hundred sixty-nine".