20001626613 has 12 divisors (see below), whose sum is σ = 29256951360. Its totient is φ = 13165627176.

The previous prime is 20001626563. The next prime is 20001626633. The reversal of 20001626613 is 31662610002.

20001626613 is a `hidden beast` number, since 20 + 0 + 0 + 1 + 6 + 26 + 613 = 666.

It is not a de Polignac number, because 20001626613 - 2⁸ = 20001626357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001626633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14065131 + ... + 14066552.

It is an arithmetic number, because the mean of its divisors is an integer number (2438079280).

Almost surely, 2^20001626613 is an apocalyptic number.

It is an amenable number.

20001626613 is a deficient number, since it is larger than the sum of its proper divisors (9255324747).

20001626613 is a wasteful number, since it uses less digits than its factorization.

20001626613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28131768 (or 28131765 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The spelling of 20001626613 in words is "twenty billion, one million, six hundred twenty-six thousand, six hundred thirteen".