51549805677 has 32 divisors (see below), whose sum is σ = 72441363456. Its totient is φ = 32543596800.

The previous prime is 51549805649. The next prime is 51549805691. The reversal of 51549805677 is 77650894515.

It is not a de Polignac number, because 51549805677 - 2⁶ = 51549805613 is a prime.

It is a super-2 number, since 2×51549805677² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51549805477) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3907302 + ... + 3920472.

It is an arithmetic number, because the mean of its divisors is an integer number (2263792608).

Almost surely, 2^51549805677 is an apocalyptic number.

It is an amenable number.

51549805677 is a deficient number, since it is larger than the sum of its proper divisors (20891557779).

51549805677 is a wasteful number, since it uses less digits than its factorization.

51549805677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13761.

The product of its (nonzero) digits is 10584000, while the sum is 57.

The spelling of 51549805677 in words is "fifty-one billion, five hundred forty-nine million, eight hundred five thousand, six hundred seventy-seven".