51754793866 has 16 divisors (see below), whose sum is σ = 78225969024. Its totient is φ = 25679602144.

The previous prime is 51754793819. The next prime is 51754793879. The reversal of 51754793866 is 66839745715.

It is a happy number.

51754793866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51754793866² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 797061 + ... + 859543.

It is an arithmetic number, because the mean of its divisors is an integer number (4889123064).

Almost surely, 2^51754793866 is an apocalyptic number.

51754793866 is a deficient number, since it is larger than the sum of its proper divisors (26471175158).

51754793866 is a wasteful number, since it uses less digits than its factorization.

51754793866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65645.

The product of its digits is 38102400, while the sum is 61.

The spelling of 51754793866 in words is "fifty-one billion, seven hundred fifty-four million, seven hundred ninety-three thousand, eight hundred sixty-six".