20616504630 has 32 divisors (see below), whose sum is σ = 49490611200. Its totient is φ = 5496512352.

The previous prime is 20616504613. The next prime is 20616504653. The reversal of 20616504630 is 3640561602.

It is a super-2 number, since 2×20616504630² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20616504591 and 20616504600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65101 + ... + 213239.

It is an arithmetic number, because the mean of its divisors is an integer number (1546581600).

Almost surely, 2^20616504630 is an apocalyptic number.

20616504630 is an abundant number, since it is smaller than the sum of its proper divisors (28874106570).

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

20616504630 is a wasteful number, since it uses less digits than its factorization.

20616504630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152788.

The product of its (nonzero) digits is 25920, while the sum is 33.

The spelling of 20616504630 in words is "twenty billion, six hundred sixteen million, five hundred four thousand, six hundred thirty".