156771697434 has 32 divisors (see below), whose sum is σ = 356918966784. Its totient is φ = 45441071280.

The previous prime is 156771697409. The next prime is 156771697441. The reversal of 156771697434 is 434796177651.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51636064 + ... + 51639099.

It is an arithmetic number, because the mean of its divisors is an integer number (11153717712).

Almost surely, 2^156771697434 is an apocalyptic number.

156771697434 is an abundant number, since it is smaller than the sum of its proper divisors (200147269350).

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

156771697434 is a wasteful number, since it uses less digits than its factorization.

156771697434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103275202.

The product of its digits is 26671680, while the sum is 60.

The spelling of 156771697434 in words is "one hundred fifty-six billion, seven hundred seventy-one million, six hundred ninety-seven thousand, four hundred thirty-four".