157630371554 has 4 divisors (see below), whose sum is σ = 236445557334. Its totient is φ = 78815185776.

The previous prime is 157630371529. The next prime is 157630371557. The reversal of 157630371554 is 455173036751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 455173036751 = 281 ⋅1619832871.

It can be written as a sum of positive squares in only one way, i.e., 90256382329 + 67373989225 = 300427^2 + 259565^2 .

It is a junction number, because it is equal to n+sod(n) for n = 157630371499 and 157630371508.

It is not an unprimeable number, because it can be changed into a prime (157630371557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39407592887 + ... + 39407592890.

Almost surely, 2^157630371554 is an apocalyptic number.

157630371554 is a deficient number, since it is larger than the sum of its proper divisors (78815185780).

157630371554 is an equidigital number, since it uses as much as digits as its factorization.

157630371554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78815185779.

The product of its (nonzero) digits is 1323000, while the sum is 47.

The spelling of 157630371554 in words is "one hundred fifty-seven billion, six hundred thirty million, three hundred seventy-one thousand, five hundred fifty-four".