78375351940751 has 2 divisors, whose sum is σ = 78375351940752. Its totient is φ = 78375351940750.

The previous prime is 78375351940573. The next prime is 78375351940759. The reversal of 78375351940751 is 15704915357387.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78375351940751 - 2³⁰ = 78374278198927 is a prime.

It is a super-2 number, since 2×78375351940751² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78375351940759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39187675970375 + 39187675970376.

It is an arithmetic number, because the mean of its divisors is an integer number (39187675970376).

Almost surely, 2^{78375351940751} is an apocalyptic number.

78375351940751 is a deficient number, since it is larger than the sum of its proper divisors (1).

78375351940751 is an equidigital number, since it uses as much as digits as its factorization.

78375351940751 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 111132000, while the sum is 65.

The spelling of 78375351940751 in words is "seventy-eight trillion, three hundred seventy-five billion, three hundred fifty-one million, nine hundred forty thousand, seven hundred fifty-one".