157857570234 has 72 divisors (see below), whose sum is σ = 428470578900. Its totient is φ = 41632762752.

The previous prime is 157857570217. The next prime is 157857570251. The reversal of 157857570234 is 432075758751.

157857570234 is a `hidden beast` number, since 15 + 7 + 8 + 57 + 570 + 2 + 3 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (157857570217) and next prime (157857570251).

It can be written as a sum of positive squares in 2 ways, for example, as 154130834025 + 3726736209 = 392595^2 + 61047^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6872259 + ... + 6895190.

Almost surely, 2^157857570234 is an apocalyptic number.

157857570234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

157857570234 is an abundant number, since it is smaller than the sum of its proper divisors (270613008666).

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

157857570234 is a wasteful number, since it uses less digits than its factorization.

157857570234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13767484 (or 13767474 counting only the distinct ones).

The product of its (nonzero) digits is 8232000, while the sum is 54.

The spelling of 157857570234 in words is "one hundred fifty-seven billion, eight hundred fifty-seven million, five hundred seventy thousand, two hundred thirty-four".