49977806481 has 12 divisors (see below), whose sum is σ = 72204017652. Its totient is φ = 33312144096.

The previous prime is 49977806477. The next prime is 49977806491. The reversal of 49977806481 is 18460877994.

49977806481 is a `hidden beast` number, since 4 + 9 + 9 + 77 + 80 + 6 + 481 = 666.

49977806481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 28547481600 + 21430324881 = 168960^2 + 146391^2 .

It is not a de Polignac number, because 49977806481 - 2² = 49977806477 is a prime.

It is a super-2 number, since 2×49977806481² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (49977806491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 483046 + ... + 577311.

It is an arithmetic number, because the mean of its divisors is an integer number (6017001471).

Almost surely, 2^49977806481 is an apocalyptic number.

It is an amenable number.

49977806481 is a deficient number, since it is larger than the sum of its proper divisors (22226211171).

49977806481 is a wasteful number, since it uses less digits than its factorization.

49977806481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065600 (or 1065597 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 63.

The spelling of 49977806481 in words is "forty-nine billion, nine hundred seventy-seven million, eight hundred six thousand, four hundred eighty-one".