51133353888 has 48 divisors (see below), whose sum is σ = 141289535520. Its totient is φ = 16147374336.

The previous prime is 51133353863. The next prime is 51133353917. The reversal of 51133353888 is 88835333115.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×51133353888² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

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 7 ways as a sum of consecutive naturals, for example, 14014995 + ... + 14018642.

It is an arithmetic number, because the mean of its divisors is an integer number (2943531990).

Almost surely, 2^51133353888 is an apocalyptic number.

It is an amenable number.

51133353888 is an abundant number, since it is smaller than the sum of its proper divisors (90156181632).

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

51133353888 is a wasteful number, since it uses less digits than its factorization.

51133353888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28033669 (or 28033661 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 48.

The spelling of 51133353888 in words is "fifty-one billion, one hundred thirty-three million, three hundred fifty-three thousand, eight hundred eighty-eight".