309779777130 has 32 divisors (see below), whose sum is σ = 744792058944. Its totient is φ = 82461207936.

The previous prime is 309779777119. The next prime is 309779777171. The reversal of 309779777130 is 31777977903.

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, 9153619 + ... + 9187398.

It is an arithmetic number, because the mean of its divisors is an integer number (23274751842).

Almost surely, 2^309779777130 is an apocalyptic number.

309779777130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

309779777130 is an abundant number, since it is smaller than the sum of its proper divisors (435012281814).

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

309779777130 is a wasteful number, since it uses less digits than its factorization.

309779777130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18341590.

The product of its (nonzero) digits is 12252303, while the sum is 60.

The spelling of 309779777130 in words is "three hundred nine billion, seven hundred seventy-nine million, seven hundred seventy-seven thousand, one hundred thirty".