30686690473020 has 72 divisors (see below), whose sum is σ = 93084528700800. Its totient is φ = 8182979648640.

The previous prime is 30686690473001. The next prime is 30686690473063. The reversal of 30686690473020 is 2037409668603.

30686690473020 is a `hidden beast` number, since 3 + 0 + 6 + 8 + 66 + 90 + 473 + 0 + 20 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9513781 + ... + 12324179.

It is an arithmetic number, because the mean of its divisors is an integer number (1292840676400).

Almost surely, 2^{30686690473020} is an apocalyptic number.

30686690473020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30686690473020 is an abundant number, since it is smaller than the sum of its proper divisors (62397838227780).

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

30686690473020 is a wasteful number, since it uses less digits than its factorization.

30686690473020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871075 (or 2871070 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 54.

The spelling of 30686690473020 in words is "thirty trillion, six hundred eighty-six billion, six hundred ninety million, four hundred seventy-three thousand, twenty".