721412565419 has 16 divisors (see below), whose sum is σ = 890001443520. Its totient is φ = 569432142720.

The previous prime is 721412565409. The next prime is 721412565421. The reversal of 721412565419 is 914565214127.

It is not a de Polignac number, because 721412565419 - 2²⁴ = 721395788203 is a prime.

It is a super-2 number, since 2×721412565419² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (721412565409) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9376904 + ... + 9453525.

It is an arithmetic number, because the mean of its divisors is an integer number (55625090220).

Almost surely, 2^721412565419 is an apocalyptic number.

721412565419 is a deficient number, since it is larger than the sum of its proper divisors (168588878101).

721412565419 is a wasteful number, since it uses less digits than its factorization.

721412565419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18830870.

The product of its digits is 604800, while the sum is 47.

The spelling of 721412565419 in words is "seven hundred twenty-one billion, four hundred twelve million, five hundred sixty-five thousand, four hundred nineteen".