157516207506 has 24 divisors (see below), whose sum is σ = 390040133184. Its totient is φ = 45004630680.

The previous prime is 157516207493. The next prime is 157516207553. The reversal of 157516207506 is 605702615751.

157516207506 is a `hidden beast` number, since 1 + 575 + 1 + 6 + 2 + 0 + 75 + 0 + 6 = 666.

It is a super-4 number, since 4×157516207506⁴ (a number of 46 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 625064190 + ... + 625064441.

It is an arithmetic number, because the mean of its divisors is an integer number (16251672216).

Almost surely, 2^157516207506 is an apocalyptic number.

157516207506 is an abundant number, since it is smaller than the sum of its proper divisors (232523925678).

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

157516207506 is a wasteful number, since it uses less digits than its factorization.

157516207506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250128646 (or 1250128643 counting only the distinct ones).

The product of its (nonzero) digits is 441000, while the sum is 45.

The spelling of 157516207506 in words is "one hundred fifty-seven billion, five hundred sixteen million, two hundred seven thousand, five hundred six".