158972056369 has 45 divisors (see below), whose sum is σ = 189674961273. Its totient is φ = 133230746376.

The previous prime is 158972056367. The next prime is 158972056391. The reversal of 158972056369 is 963650279851.

The square root of 158972056369 is 398713.

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

It is not a de Polignac number, because 158972056369 - 2¹ = 158972056367 is a prime.

It is a super-2 number, since 2×158972056369² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (158972056367) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1543417972 + ... + 1543418074.

Almost surely, 2^158972056369 is an apocalyptic number.

158972056369 is the 398713-rd square number.

158972056369 is the 199357-th centered octagonal number.

It is an amenable number.

158972056369 is a deficient number, since it is larger than the sum of its proper divisors (30702904904).

158972056369 is an frugal number, since it uses more digits than its factorization.

158972056369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 24494400, while the sum is 61.

It can be divided in two parts, 1589720 and 56369, that added together give a square (1646089 = 1283²).

The spelling of 158972056369 in words is "one hundred fifty-eight billion, nine hundred seventy-two million, fifty-six thousand, three hundred sixty-nine".