74639469405 has 32 divisors (see below), whose sum is σ = 121302576000. Its totient is φ = 39183436800.

The previous prime is 74639469397. The next prime is 74639469439. The reversal of 74639469405 is 50496493647.

It is a happy number.

It is not a de Polignac number, because 74639469405 - 2³ = 74639469397 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 478105 + ... + 614705.

It is an arithmetic number, because the mean of its divisors is an integer number (3790705500).

Almost surely, 2^74639469405 is an apocalyptic number.

It is an amenable number.

74639469405 is a deficient number, since it is larger than the sum of its proper divisors (46663106595).

74639469405 is a wasteful number, since it uses less digits than its factorization.

74639469405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137181.

The product of its (nonzero) digits is 19595520, while the sum is 57.

The spelling of 74639469405 in words is "seventy-four billion, six hundred thirty-nine million, four hundred sixty-nine thousand, four hundred five".