74889097989929 has 2 divisors, whose sum is σ = 74889097989930. Its totient is φ = 74889097989928.

The previous prime is 74889097989913. The next prime is 74889097989947. The reversal of 74889097989929 is 92998979098847.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71019772946329 + 3869325043600 = 8427323^2 + 1967060^2 .

It is a cyclic number.

It is not a de Polignac number, because 74889097989929 - 2⁴ = 74889097989913 is a prime.

It is not a weakly prime, because it can be changed into another prime (74889097989989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37444548994964 + 37444548994965.

It is an arithmetic number, because the mean of its divisors is an integer number (37444548994965).

Almost surely, 2^{74889097989929} is an apocalyptic number.

It is an amenable number.

74889097989929 is a deficient number, since it is larger than the sum of its proper divisors (1).

74889097989929 is an equidigital number, since it uses as much as digits as its factorization.

74889097989929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 106662334464, while the sum is 98.

The spelling of 74889097989929 in words is "seventy-four trillion, eight hundred eighty-nine billion, ninety-seven million, nine hundred eighty-nine thousand, nine hundred twenty-nine".