50631329381 has 16 divisors (see below), whose sum is σ = 56453760000. Its totient is φ = 45162931968.

The previous prime is 50631329363. The next prime is 50631329387. The reversal of 50631329381 is 18392313605.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 50631329381 - 2²² = 50627135077 is a prime.

It is a super-2 number, since 2×50631329381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50631329387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 551381 + ... + 636618.

It is an arithmetic number, because the mean of its divisors is an integer number (3528360000).

Almost surely, 2^50631329381 is an apocalyptic number.

It is an amenable number.

50631329381 is a deficient number, since it is larger than the sum of its proper divisors (5822430619).

50631329381 is a wasteful number, since it uses less digits than its factorization.

50631329381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188148.

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 50631329381 in words is "fifty billion, six hundred thirty-one million, three hundred twenty-nine thousand, three hundred eighty-one".