78946864967 has 2 divisors, whose sum is σ = 78946864968. Its totient is φ = 78946864966.

The previous prime is 78946864877. The next prime is 78946865033. The reversal of 78946864967 is 76946864987.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78946864967 - 2¹² = 78946860871 is a prime.

It is a super-2 number, since 2×78946864967² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78946864894 and 78946864903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78946864067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39473432483 + 39473432484.

It is an arithmetic number, because the mean of its divisors is an integer number (39473432484).

Almost surely, 2^78946864967 is an apocalyptic number.

78946864967 is a deficient number, since it is larger than the sum of its proper divisors (1).

78946864967 is an equidigital number, since it uses as much as digits as its factorization.

78946864967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 877879296, while the sum is 74.

The spelling of 78946864967 in words is "seventy-eight billion, nine hundred forty-six million, eight hundred sixty-four thousand, nine hundred sixty-seven".