74736690781651 has 2 divisors, whose sum is σ = 74736690781652. Its totient is φ = 74736690781650.

The previous prime is 74736690781553. The next prime is 74736690781663. The reversal of 74736690781651 is 15618709663747.

It is a strong prime.

It is an emirp because it is prime and its reverse (15618709663747) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74736690781651 - 2⁹ = 74736690781139 is a prime.

It is a super-2 number, since 2×74736690781651² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74736690781691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37368345390825 + 37368345390826.

It is an arithmetic number, because the mean of its divisors is an integer number (37368345390826).

Almost surely, 2^{74736690781651} is an apocalyptic number.

74736690781651 is a deficient number, since it is larger than the sum of its proper divisors (1).

74736690781651 is an equidigital number, since it uses as much as digits as its factorization.

74736690781651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320060160, while the sum is 70.

The spelling of 74736690781651 in words is "seventy-four trillion, seven hundred thirty-six billion, six hundred ninety million, seven hundred eighty-one thousand, six hundred fifty-one".