51571467967 has 2 divisors, whose sum is σ = 51571467968. Its totient is φ = 51571467966.

The previous prime is 51571467931. The next prime is 51571467979. The reversal of 51571467967 is 76976417515.

It is a happy number.

51571467967 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51571467967 - 2¹⁹ = 51570943679 is a prime.

It is a super-2 number, since 2×51571467967² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51571467917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25785733983 + 25785733984.

It is an arithmetic number, because the mean of its divisors is an integer number (25785733984).

Almost surely, 2^51571467967 is an apocalyptic number.

51571467967 is a deficient number, since it is larger than the sum of its proper divisors (1).

51571467967 is an equidigital number, since it uses as much as digits as its factorization.

51571467967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11113200, while the sum is 58.

The spelling of 51571467967 in words is "fifty-one billion, five hundred seventy-one million, four hundred sixty-seven thousand, nine hundred sixty-seven".