78632055331 has 2 divisors, whose sum is σ = 78632055332. Its totient is φ = 78632055330.

The previous prime is 78632055319. The next prime is 78632055347. The reversal of 78632055331 is 13355023687.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78632055331 - 2²¹ = 78629958179 is a prime.

It is a super-2 number, since 2×78632055331² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78632055431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39316027665 + 39316027666.

It is an arithmetic number, because the mean of its divisors is an integer number (39316027666).

Almost surely, 2^78632055331 is an apocalyptic number.

78632055331 is a deficient number, since it is larger than the sum of its proper divisors (1).

78632055331 is an equidigital number, since it uses as much as digits as its factorization.

78632055331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 43.

The spelling of 78632055331 in words is "seventy-eight billion, six hundred thirty-two million, fifty-five thousand, three hundred thirty-one".