30649986020 has 24 divisors (see below), whose sum is σ = 65140455744. Its totient is φ = 12112282976.

The previous prime is 30649986011. The next prime is 30649986023. The reversal of 30649986020 is 2068994603.

It is not an unprimeable number, because it can be changed into a prime (30649986023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9230264 + ... + 9233583.

It is an arithmetic number, because the mean of its divisors is an integer number (2714185656).

Almost surely, 2^30649986020 is an apocalyptic number.

It is an amenable number.

30649986020 is an abundant number, since it is smaller than the sum of its proper divisors (34490469724).

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

30649986020 is a wasteful number, since it uses less digits than its factorization.

30649986020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18463939 (or 18463937 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 47.

The spelling of 30649986020 in words is "thirty billion, six hundred forty-nine million, nine hundred eighty-six thousand, twenty".