51641106651 has 24 divisors (see below), whose sum is σ = 75379322304. Its totient is φ = 34065872880.

The previous prime is 51641106641. The next prime is 51641106739. The reversal of 51641106651 is 15660114615.

51641106651 is a `hidden beast` number, since 5 + 1 + 641 + 1 + 0 + 6 + 6 + 5 + 1 = 666.

It is not a de Polignac number, because 51641106651 - 2¹³ = 51641098459 is a prime.

It is a super-2 number, since 2×51641106651² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51641106641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 346000 + ... + 472226.

It is an arithmetic number, because the mean of its divisors is an integer number (3140805096).

Almost surely, 2^51641106651 is an apocalyptic number.

51641106651 is a deficient number, since it is larger than the sum of its proper divisors (23738215653).

51641106651 is a wasteful number, since it uses less digits than its factorization.

51641106651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126711 (or 126708 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 51641106651 in words is "fifty-one billion, six hundred forty-one million, one hundred six thousand, six hundred fifty-one".