20013263664630 has 32 divisors (see below), whose sum is σ = 48610529581824. Its totient is φ = 5272570667616.

The previous prime is 20013263664623. The next prime is 20013263664643. The reversal of 20013263664630 is 3646636231002.

It is a super-2 number, since 2×20013263664630² (a number of 27 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 15 ways as a sum of consecutive naturals, for example, 4018725154 + ... + 4018730133.

It is an arithmetic number, because the mean of its divisors is an integer number (1519079049432).

Almost surely, 2^{20013263664630} is an apocalyptic number.

20013263664630 is an abundant number, since it is smaller than the sum of its proper divisors (28597265917194).

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

20013263664630 is a wasteful number, since it uses less digits than its factorization.

20013263664630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8037455380.

The product of its (nonzero) digits is 559872, while the sum is 42.

Adding to 20013263664630 its reverse (3646636231002), we get a palindrome (23659899895632).

The spelling of 20013263664630 in words is "twenty trillion, thirteen billion, two hundred sixty-three million, six hundred sixty-four thousand, six hundred thirty".