157251738540 has 72 divisors (see below), whose sum is σ = 476779858128. Its totient is φ = 38708117760.

The previous prime is 157251738517. The next prime is 157251738557. The reversal of 157251738540 is 45837152751.

157251738540 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 157251738540.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7743891 + ... + 7764170.

It is an arithmetic number, because the mean of its divisors is an integer number (6621942474).

Almost surely, 2^157251738540 is an apocalyptic number.

157251738540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157251738540 is an abundant number, since it is smaller than the sum of its proper divisors (319528119588).

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

157251738540 is a wasteful number, since it uses less digits than its factorization.

157251738540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15508099 (or 15508084 counting only the distinct ones).

The product of its (nonzero) digits is 1176000, while the sum is 48.

It can be divided in two parts, 157251 and 738540, that added together give a triangular number (895791 = T₁₃₃₈).

The spelling of 157251738540 in words is "one hundred fifty-seven billion, two hundred fifty-one million, seven hundred thirty-eight thousand, five hundred forty".