20651051160 has 48 divisors (see below), whose sum is σ = 67115917440. Its totient is φ = 5506946880.

The previous prime is 20651051159. The next prime is 20651051173. The reversal of 20651051160 is 6115015602.

It is a happy number.

20651051160 is a `hidden beast` number, since 2 + 0 + 651 + 0 + 5 + 1 + 1 + 6 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28681656 + ... + 28682375.

It is an arithmetic number, because the mean of its divisors is an integer number (1398248280).

Almost surely, 2^20651051160 is an apocalyptic number.

20651051160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20651051160 is an abundant number, since it is smaller than the sum of its proper divisors (46464866280).

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

20651051160 is a wasteful number, since it uses less digits than its factorization.

20651051160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57364048 (or 57364041 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 20651051160 its reverse (6115015602), we get a palindrome (26766066762).

The spelling of 20651051160 in words is "twenty billion, six hundred fifty-one million, fifty-one thousand, one hundred sixty".