30907978102 has 16 divisors (see below), whose sum is σ = 47064990960. Its totient is φ = 15219756288.

The previous prime is 30907978099. The next prime is 30907978111. The reversal of 30907978102 is 20187970903.

It is a happy number.

It is a super-2 number, since 2×30907978102² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 599274 + ... + 648802.

It is an arithmetic number, because the mean of its divisors is an integer number (2941561935).

Almost surely, 2^30907978102 is an apocalyptic number.

30907978102 is a deficient number, since it is larger than the sum of its proper divisors (16157012858).

30907978102 is a wasteful number, since it uses less digits than its factorization.

30907978102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54255.

The product of its (nonzero) digits is 190512, while the sum is 46.

The spelling of 30907978102 in words is "thirty billion, nine hundred seven million, nine hundred seventy-eight thousand, one hundred two".