82640485015507 has 4 divisors (see below), whose sum is σ = 82661800594576. Its totient is φ = 82619169436440.

The previous prime is 82640485015469. The next prime is 82640485015531. The reversal of 82640485015507 is 70551058404628.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82640485015507 - 2³⁹ = 82090729201619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82640485015547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10657783719 + ... + 10657791472.

It is an arithmetic number, because the mean of its divisors is an integer number (20665450148644).

Almost surely, 2^{82640485015507} is an apocalyptic number.

82640485015507 is a deficient number, since it is larger than the sum of its proper divisors (21315579069).

82640485015507 is a wasteful number, since it uses less digits than its factorization.

82640485015507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21315579068.

The product of its (nonzero) digits is 10752000, while the sum is 55.

The spelling of 82640485015507 in words is "eighty-two trillion, six hundred forty billion, four hundred eighty-five million, fifteen thousand, five hundred seven".