51163301640231 has 36 divisors (see below), whose sum is σ = 81340735798296. Its totient is φ = 30733653216000.

The previous prime is 51163301640211. The next prime is 51163301640233. The reversal of 51163301640231 is 13204610336115.

51163301640231 is a `hidden beast` number, since 5 + 1 + 1 + 6 + 3 + 3 + 0 + 1 + 640 + 2 + 3 + 1 = 666.

It is not a de Polignac number, because 51163301640231 - 2¹⁰ = 51163301639207 is a prime.

It is a super-2 number, since 2×51163301640231² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51163301640233) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18972420 + ... + 21500681.

It is an arithmetic number, because the mean of its divisors is an integer number (2259464883286).

Almost surely, 2^{51163301640231} is an apocalyptic number.

51163301640231 is a deficient number, since it is larger than the sum of its proper divisors (30177434158065).

51163301640231 is a wasteful number, since it uses less digits than its factorization.

51163301640231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40473344 (or 40473228 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

Adding to 51163301640231 its reverse (13204610336115), we get a palindrome (64367911976346).

The spelling of 51163301640231 in words is "fifty-one trillion, one hundred sixty-three billion, three hundred one million, six hundred forty thousand, two hundred thirty-one".