30775978009 has 32 divisors (see below), whose sum is σ = 37257891840. Its totient is φ = 24866049600.

The previous prime is 30775978007. The next prime is 30775978031. The reversal of 30775978009 is 90087957703.

It is not a de Polignac number, because 30775978009 - 2¹ = 30775978007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30775978001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1474174 + ... + 1494904.

It is an arithmetic number, because the mean of its divisors is an integer number (1164309120).

Almost surely, 2^30775978009 is an apocalyptic number.

It is an amenable number.

30775978009 is a deficient number, since it is larger than the sum of its proper divisors (6481913831).

30775978009 is a wasteful number, since it uses less digits than its factorization.

30775978009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20941.

The product of its (nonzero) digits is 3333960, while the sum is 55.

The spelling of 30775978009 in words is "thirty billion, seven hundred seventy-five million, nine hundred seventy-eight thousand, nine".