156610665006500 has 48 divisors (see below), whose sum is σ = 342188438657520. Its totient is φ = 62616656793600.

The previous prime is 156610665006437. The next prime is 156610665006511. The reversal of 156610665006500 is 5600566016651.

It can be written as a sum of positive squares in 8 ways, for example, as 76495419699556 + 80115245306944 = 8746166^2 + 8950712^2 .

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 67887389 + ... + 70156388.

It is an arithmetic number, because the mean of its divisors is an integer number (7128925805365).

Almost surely, 2^{156610665006500} is an apocalyptic number.

156610665006500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156610665006500 is an abundant number, since it is smaller than the sum of its proper divisors (185577773651020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

156610665006500 is a wasteful number, since it uses less digits than its factorization.

156610665006500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138046065 (or 138046053 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 156610665006500 in words is "one hundred fifty-six trillion, six hundred ten billion, six hundred sixty-five million, six thousand, five hundred".