157476429889 has 3 divisors (see below), whose sum is σ = 157476826723. Its totient is φ = 157476033056.

The previous prime is 157476429883. The next prime is 157476429989. The reversal of 157476429889 is 988924674751.

The square root of 157476429889 is 396833.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 16244777025 + 141231652864 = 127455^2 + 375808^2 .

It is not a de Polignac number, because 157476429889 - 2³ = 157476429881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157476429881) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 198417 + ... + 595249.

Almost surely, 2^157476429889 is an apocalyptic number.

157476429889 is the 396833-rd square number.

157476429889 is the 198417-th centered octagonal number.

It is an amenable number.

157476429889 is a deficient number, since it is larger than the sum of its proper divisors (396834).

157476429889 is an frugal number, since it uses more digits than its factorization.

157476429889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793666 (or 396833 counting only the distinct ones).

The product of its digits is 243855360, while the sum is 70.

The spelling of 157476429889 in words is "one hundred fifty-seven billion, four hundred seventy-six million, four hundred twenty-nine thousand, eight hundred eighty-nine".