51011771672 has 32 divisors (see below), whose sum is σ = 102331657200. Its totient is φ = 23767344000.

The previous prime is 51011771623. The next prime is 51011771711. The reversal of 51011771672 is 27617711015.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2741579 + ... + 2760122.

Almost surely, 2^51011771672 is an apocalyptic number.

It is an amenable number.

51011771672 is an abundant number, since it is smaller than the sum of its proper divisors (51319885528).

51011771672 is a wasteful number, since it uses less digits than its factorization.

51011771672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5501787 (or 5501783 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 38.

The spelling of 51011771672 in words is "fifty-one billion, eleven million, seven hundred seventy-one thousand, six hundred seventy-two".