137231530785 has 24 divisors (see below), whose sum is σ = 248210074944. Its totient is φ = 70007968800.

The previous prime is 137231530783. The next prime is 137231530789. The reversal of 137231530785 is 587035132731.

137231530785 is a `hidden beast` number, since 1 + 3 + 7 + 2 + 31 + 530 + 7 + 85 = 666.

It is not a de Polignac number, because 137231530785 - 2¹ = 137231530783 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 137231530785.

It is not an unprimeable number, because it can be changed into a prime (137231530783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66294391 + ... + 66296460.

It is an arithmetic number, because the mean of its divisors is an integer number (10342086456).

Almost surely, 2^137231530785 is an apocalyptic number.

137231530785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

137231530785 is a deficient number, since it is larger than the sum of its proper divisors (110978544159).

137231530785 is a wasteful number, since it uses less digits than its factorization.

137231530785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132590885 (or 132590882 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The spelling of 137231530785 in words is "one hundred thirty-seven billion, two hundred thirty-one million, five hundred thirty thousand, seven hundred eighty-five".