140409992985 has 32 divisors (see below), whose sum is σ = 227951013888. Its totient is φ = 73788200640.

The previous prime is 140409992977. The next prime is 140409992993. The reversal of 140409992985 is 589299904041.

It is an interprime number because it is at equal distance from previous prime (140409992977) and next prime (140409992993).

It is not a de Polignac number, because 140409992985 - 2³ = 140409992977 is a prime.

It is a super-2 number, since 2×140409992985² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1861924 + ... + 1935866.

It is an arithmetic number, because the mean of its divisors is an integer number (7123469184).

Almost surely, 2^140409992985 is an apocalyptic number.

140409992985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140409992985 is a deficient number, since it is larger than the sum of its proper divisors (87541020903).

140409992985 is a wasteful number, since it uses less digits than its factorization.

140409992985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75805.

The product of its (nonzero) digits is 8398080, while the sum is 60.

The spelling of 140409992985 in words is "one hundred forty billion, four hundred nine million, nine hundred ninety-two thousand, nine hundred eighty-five".