51477036355440 has 120 divisors (see below), whose sum is σ = 173061549945648. Its totient is φ = 13712559344640.

The previous prime is 51477036355439. The next prime is 51477036355441. The reversal of 51477036355440 is 4455363077415.

51477036355440 is a `hidden beast` number, since 5 + 1 + 47 + 7 + 0 + 3 + 6 + 3 + 554 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (51477036355439) and next prime (51477036355441).

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51477036355441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37476846 + ... + 38826125.

Almost surely, 2^{51477036355440} is an apocalyptic number.

It is an amenable number.

51477036355440 is an abundant number, since it is smaller than the sum of its proper divisors (121584513590208).

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

51477036355440 is a wasteful number, since it uses less digits than its factorization.

51477036355440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76303927 (or 76303918 counting only the distinct ones).

The product of its (nonzero) digits is 21168000, while the sum is 54.

The spelling of 51477036355440 in words is "fifty-one trillion, four hundred seventy-seven billion, thirty-six million, three hundred fifty-five thousand, four hundred forty".