78100842674731 has 2 divisors, whose sum is σ = 78100842674732. Its totient is φ = 78100842674730.

The previous prime is 78100842674693. The next prime is 78100842674791. The reversal of 78100842674731 is 13747624800187.

It is a weak prime.

It is an emirp because it is prime and its reverse (13747624800187) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78100842674731 - 2¹¹ = 78100842672683 is a prime.

It is a super-2 number, since 2×78100842674731² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78100842674791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39050421337365 + 39050421337366.

It is an arithmetic number, because the mean of its divisors is an integer number (39050421337366).

Almost surely, 2^{78100842674731} is an apocalyptic number.

78100842674731 is a deficient number, since it is larger than the sum of its proper divisors (1).

78100842674731 is an equidigital number, since it uses as much as digits as its factorization.

78100842674731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12644352, while the sum is 58.

The spelling of 78100842674731 in words is "seventy-eight trillion, one hundred billion, eight hundred forty-two million, six hundred seventy-four thousand, seven hundred thirty-one".