82591046738 has 6 divisors (see below), whose sum is σ = 123887179749. Its totient is φ = 41295320156.

The previous prime is 82591046729. The next prime is 82591046749. The reversal of 82591046738 is 83764019528.

It can be written as a sum of positive squares in 2 ways, for example, as 80893029889 + 1698016849 = 284417^2 + 41207^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=203213.

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 82591046738.

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, 304820 + ... + 508032.

It is a 2-persistent number, because it is pandigital, and so is 2⋅82591046738 = 165182093476, but 3⋅82591046738 = 247773140214 is not.

Almost surely, 2^82591046738 is an apocalyptic number.

82591046738 is a deficient number, since it is larger than the sum of its proper divisors (41296133011).

82591046738 is an frugal number, since it uses more digits than its factorization.

82591046738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406428 (or 203215 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 82591046738 in words is "eighty-two billion, five hundred ninety-one million, forty-six thousand, seven hundred thirty-eight".