721477845474 has 16 divisors (see below), whose sum is σ = 1443969731712. Its totient is φ = 240323608368.

The previous prime is 721477845469. The next prime is 721477845493. The reversal of 721477845474 is 474548774127.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42242449 + ... + 42259524.

It is an arithmetic number, because the mean of its divisors is an integer number (90248108232).

Almost surely, 2^721477845474 is an apocalyptic number.

721477845474 is an abundant number, since it is smaller than the sum of its proper divisors (722491886238).

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

721477845474 is a wasteful number, since it uses less digits than its factorization.

721477845474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84503401.

The product of its digits is 49172480, while the sum is 60.

The spelling of 721477845474 in words is "seven hundred twenty-one billion, four hundred seventy-seven million, eight hundred forty-five thousand, four hundred seventy-four".