51113541630 has 32 divisors (see below), whose sum is σ = 123425103744. Its totient is φ = 13546655136.

The previous prime is 51113541629. The next prime is 51113541641. The reversal of 51113541630 is 3614531115.

It is a super-2 number, since 2×51113541630² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 5221444 + ... + 5231223.

It is an arithmetic number, because the mean of its divisors is an integer number (3857034492).

Almost surely, 2^51113541630 is an apocalyptic number.

51113541630 is an abundant number, since it is smaller than the sum of its proper divisors (72311562114).

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

51113541630 is a wasteful number, since it uses less digits than its factorization.

51113541630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10452840.

The product of its (nonzero) digits is 5400, while the sum is 30.

The spelling of 51113541630 in words is "fifty-one billion, one hundred thirteen million, five hundred forty-one thousand, six hundred thirty".