82507758032557 has 32 divisors (see below), whose sum is σ = 98616499752960. Its totient is φ = 68035187459520.

The previous prime is 82507758032551. The next prime is 82507758032561. The reversal of 82507758032557 is 75523085770528.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 82507758032557 - 2³ = 82507758032549 is a prime.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82507758032551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18053488 + ... + 22157254.

It is an arithmetic number, because the mean of its divisors is an integer number (3081765617280).

Almost surely, 2^{82507758032557} is an apocalyptic number.

It is an amenable number.

82507758032557 is a deficient number, since it is larger than the sum of its proper divisors (16108741720403).

82507758032557 is a wasteful number, since it uses less digits than its factorization.

82507758032557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4106233.

The product of its (nonzero) digits is 164640000, while the sum is 64.

The spelling of 82507758032557 in words is "eighty-two trillion, five hundred seven billion, seven hundred fifty-eight million, thirty-two thousand, five hundred fifty-seven".