721677075475 has 12 divisors (see below), whose sum is σ = 947519549064. Its totient is φ = 543380385920.

The previous prime is 721677075467. The next prime is 721677075517. The reversal of 721677075475 is 574570776127.

It is not a de Polignac number, because 721677075475 - 2³ = 721677075467 is a prime.

It is a super-2 number, since 2×721677075475² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 849031429 + ... + 849032278.

It is an arithmetic number, because the mean of its divisors is an integer number (78959962422).

Almost surely, 2^721677075475 is an apocalyptic number.

721677075475 is a deficient number, since it is larger than the sum of its proper divisors (225842473589).

721677075475 is a wasteful number, since it uses less digits than its factorization.

721677075475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698063734 (or 1698063729 counting only the distinct ones).

The product of its (nonzero) digits is 20168400, while the sum is 58.

The spelling of 721677075475 in words is "seven hundred twenty-one billion, six hundred seventy-seven million, seventy-five thousand, four hundred seventy-five".