157155440442 has 64 divisors (see below), whose sum is σ = 422011828224. Its totient is φ = 37679624640.

The previous prime is 157155440419. The next prime is 157155440459. The reversal of 157155440442 is 244044551751.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 157155440394 and 157155440403.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13077198 + ... + 13089209.

It is an arithmetic number, because the mean of its divisors is an integer number (6593934816).

Almost surely, 2^157155440442 is an apocalyptic number.

157155440442 is an abundant number, since it is smaller than the sum of its proper divisors (264856387782).

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

157155440442 is a wasteful number, since it uses less digits than its factorization.

157155440442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26166443.

The product of its (nonzero) digits is 448000, while the sum is 42.

The spelling of 157155440442 in words is "one hundred fifty-seven billion, one hundred fifty-five million, four hundred forty thousand, four hundred forty-two".