82402572722 has 6 divisors (see below), whose sum is σ = 123604468029. Its totient is φ = 41201083380.

The previous prime is 82402572713. The next prime is 82402572761. The reversal of 82402572722 is 22727520428.

It can be written as a sum of positive squares in 2 ways, for example, as 74883775201 + 7518797521 = 273649^2 + 86711^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=202981.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82402572722.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 304472 + ... + 507452.

Almost surely, 2^82402572722 is an apocalyptic number.

82402572722 is a deficient number, since it is larger than the sum of its proper divisors (41201895307).

82402572722 is an frugal number, since it uses more digits than its factorization.

82402572722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405964 (or 202983 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 41.

The spelling of 82402572722 in words is "eighty-two billion, four hundred two million, five hundred seventy-two thousand, seven hundred twenty-two".