51457967911 has 16 divisors (see below), whose sum is σ = 60044431104. Its totient is φ = 43189743744.

The previous prime is 51457967833. The next prime is 51457967933. The reversal of 51457967911 is 11976975415.

It is a happy number.

It is not a de Polignac number, because 51457967911 - 2²³ = 51449579303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51457967411) 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, 326241 + ... + 457546.

It is an arithmetic number, because the mean of its divisors is an integer number (3752776944).

Almost surely, 2^51457967911 is an apocalyptic number.

51457967911 is a deficient number, since it is larger than the sum of its proper divisors (8586463193).

51457967911 is a wasteful number, since it uses less digits than its factorization.

51457967911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783990.

The product of its digits is 2381400, while the sum is 55.

The spelling of 51457967911 in words is "fifty-one billion, four hundred fifty-seven million, nine hundred sixty-seven thousand, nine hundred eleven".