78371962951 has 2 divisors, whose sum is σ = 78371962952. Its totient is φ = 78371962950.

The previous prime is 78371962937. The next prime is 78371962967. The reversal of 78371962951 is 15926917387.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78371962951 - 2⁵ = 78371962919 is a prime.

It is a super-2 number, since 2×78371962951² (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 (78371962351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39185981475 + 39185981476.

It is an arithmetic number, because the mean of its divisors is an integer number (39185981476).

Almost surely, 2^78371962951 is an apocalyptic number.

78371962951 is a deficient number, since it is larger than the sum of its proper divisors (1).

78371962951 is an equidigital number, since it uses as much as digits as its factorization.

78371962951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5715360, while the sum is 58.

The spelling of 78371962951 in words is "seventy-eight billion, three hundred seventy-one million, nine hundred sixty-two thousand, nine hundred fifty-one".