78070967797 has 2 divisors, whose sum is σ = 78070967798. Its totient is φ = 78070967796.

The previous prime is 78070967789. The next prime is 78070967851. The reversal of 78070967797 is 79776907087.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77002920036 + 1068047761 = 277494^2 + 32681^2 .

It is a cyclic number.

It is not a de Polignac number, because 78070967797 - 2³ = 78070967789 is a prime.

It is a super-2 number, since 2×78070967797² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78070967707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39035483898 + 39035483899.

It is an arithmetic number, because the mean of its divisors is an integer number (39035483899).

Almost surely, 2^78070967797 is an apocalyptic number.

It is an amenable number.

78070967797 is a deficient number, since it is larger than the sum of its proper divisors (1).

78070967797 is an equidigital number, since it uses as much as digits as its factorization.

78070967797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65345616, while the sum is 67.

The spelling of 78070967797 in words is "seventy-eight billion, seventy million, nine hundred sixty-seven thousand, seven hundred ninety-seven".