74721479320 has 32 divisors (see below), whose sum is σ = 170632638000. Its totient is φ = 29442492288.

The previous prime is 74721479311. The next prime is 74721479351. The reversal of 74721479320 is 2397412747.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13937895 + ... + 13943254.

Almost surely, 2^74721479320 is an apocalyptic number.

It is an amenable number.

74721479320 is an abundant number, since it is smaller than the sum of its proper divisors (95911158680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74721479320 is a wasteful number, since it uses less digits than its factorization.

74721479320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27881227 (or 27881223 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 46.

The spelling of 74721479320 in words is "seventy-four billion, seven hundred twenty-one million, four hundred seventy-nine thousand, three hundred twenty".