74601952639 has 2 divisors, whose sum is σ = 74601952640. Its totient is φ = 74601952638.

The previous prime is 74601952613. The next prime is 74601952687. The reversal of 74601952639 is 93625910647.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74601952639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74601952609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37300976319 + 37300976320.

It is an arithmetic number, because the mean of its divisors is an integer number (37300976320).

Almost surely, 2^74601952639 is an apocalyptic number.

74601952639 is a deficient number, since it is larger than the sum of its proper divisors (1).

74601952639 is an equidigital number, since it uses as much as digits as its factorization.

74601952639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2449440, while the sum is 52.

The spelling of 74601952639 in words is "seventy-four billion, six hundred one million, nine hundred fifty-two thousand, six hundred thirty-nine".