156849900770 has 24 divisors (see below), whose sum is σ = 287673521436. Its totient is φ = 61552609248.

The previous prime is 156849900763. The next prime is 156849900793. The reversal of 156849900770 is 77009948651.

It can be written as a sum of positive squares in 2 ways, for example, as 156553957561 + 295943209 = 395669^2 + 17203^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9108989 + ... + 9126191.

Almost surely, 2^156849900770 is an apocalyptic number.

156849900770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

156849900770 is a deficient number, since it is larger than the sum of its proper divisors (130823620666).

156849900770 is an frugal number, since it uses more digits than its factorization.

156849900770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34466 (or 17263 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 56.

The spelling of 156849900770 in words is "one hundred fifty-six billion, eight hundred forty-nine million, nine hundred thousand, seven hundred seventy".