82557075394 has 8 divisors (see below), whose sum is σ = 124295969340. Its totient is φ = 41125085616.

The previous prime is 82557075371. The next prime is 82557075413. The reversal of 82557075394 is 49357075528.

It can be written as a sum of positive squares in 2 ways, for example, as 66835175625 + 15721899769 = 258525^2 + 125387^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×82557075394² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76725369 + ... + 76726444.

Almost surely, 2^82557075394 is an apocalyptic number.

82557075394 is a deficient number, since it is larger than the sum of its proper divisors (41738893946).

82557075394 is a wasteful number, since it uses less digits than its factorization.

82557075394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153452084.

The product of its (nonzero) digits is 10584000, while the sum is 55.

The spelling of 82557075394 in words is "eighty-two billion, five hundred fifty-seven million, seventy-five thousand, three hundred ninety-four".