74383956921 has 8 divisors (see below), whose sum is σ = 100160576064. Its totient is φ = 49098321200.

The previous prime is 74383956887. The next prime is 74383956929. The reversal of 74383956921 is 12965938347.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74383956921 - 2⁷ = 74383956793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74383956929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122745501 + ... + 122746106.

It is an arithmetic number, because the mean of its divisors is an integer number (12520072008).

Almost surely, 2^74383956921 is an apocalyptic number.

It is an amenable number.

74383956921 is a deficient number, since it is larger than the sum of its proper divisors (25776619143).

74383956921 is a wasteful number, since it uses less digits than its factorization.

74383956921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245491711.

The product of its digits is 9797760, while the sum is 57.

The spelling of 74383956921 in words is "seventy-four billion, three hundred eighty-three million, nine hundred fifty-six thousand, nine hundred twenty-one".