157747252770 has 96 divisors (see below), whose sum is σ = 421230242160. Its totient is φ = 40934062080.

The previous prime is 157747252717. The next prime is 157747252781. The reversal of 157747252770 is 77252747751.

It is a happy number.

157747252770 is a `hidden beast` number, since 1 + 5 + 7 + 7 + 47 + 2 + 527 + 70 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 3253447521 + 154493805249 = 57039^2 + 393057^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1380462 + ... + 1490358.

Almost surely, 2^157747252770 is an apocalyptic number.

157747252770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 157747252770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210615121080).

157747252770 is an abundant number, since it is smaller than the sum of its proper divisors (263482989390).

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

157747252770 is a wasteful number, since it uses less digits than its factorization.

157747252770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110340 (or 110337 counting only the distinct ones).

The product of its (nonzero) digits is 6722800, while the sum is 54.

The spelling of 157747252770 in words is "one hundred fifty-seven billion, seven hundred forty-seven million, two hundred fifty-two thousand, seven hundred seventy".