51005110665510 has 24 divisors (see below), whose sum is σ = 132613287730560. Its totient is φ = 13601362844112.

The previous prime is 51005110665491. The next prime is 51005110665533. The reversal of 51005110665510 is 1556601150015.

It is a happy number.

51005110665510 is a `hidden beast` number, since 51 + 0 + 0 + 51 + 1 + 0 + 6 + 6 + 551 + 0 = 666.

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 11 ways as a sum of consecutive naturals, for example, 283361725830 + ... + 283361726009.

It is an arithmetic number, because the mean of its divisors is an integer number (5525553655440).

Almost surely, 2^{51005110665510} is an apocalyptic number.

51005110665510 is an abundant number, since it is smaller than the sum of its proper divisors (81608177065050).

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

51005110665510 is a wasteful number, since it uses less digits than its factorization.

51005110665510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566723451852 (or 566723451849 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 36.

The spelling of 51005110665510 in words is "fifty-one trillion, five billion, one hundred ten million, six hundred sixty-five thousand, five hundred ten".