74087979751 has 2 divisors, whose sum is σ = 74087979752. Its totient is φ = 74087979750.

The previous prime is 74087979743. The next prime is 74087979773. The reversal of 74087979751 is 15797978047.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (15797978047) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74087979751 - 2³ = 74087979743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74087979151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37043989875 + 37043989876.

It is an arithmetic number, because the mean of its divisors is an integer number (37043989876).

Almost surely, 2^74087979751 is an apocalyptic number.

74087979751 is a deficient number, since it is larger than the sum of its proper divisors (1).

74087979751 is an equidigital number, since it uses as much as digits as its factorization.

74087979751 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31116960, while the sum is 64.

The spelling of 74087979751 in words is "seventy-four billion, eighty-seven million, nine hundred seventy-nine thousand, seven hundred fifty-one".