157301971378 has 4 divisors (see below), whose sum is σ = 235952957070. Its totient is φ = 78650985688.

The previous prime is 157301971367. The next prime is 157301971429. The reversal of 157301971378 is 873179103751.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 85706661049 + 71595310329 = 292757^2 + 267573^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39325492843 + ... + 39325492846.

Almost surely, 2^157301971378 is an apocalyptic number.

157301971378 is a deficient number, since it is larger than the sum of its proper divisors (78650985692).

157301971378 is an equidigital number, since it uses as much as digits as its factorization.

157301971378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78650985691.

The product of its (nonzero) digits is 1111320, while the sum is 52.

The spelling of 157301971378 in words is "one hundred fifty-seven billion, three hundred one million, nine hundred seventy-one thousand, three hundred seventy-eight".