7902661557606 has 32 divisors (see below), whose sum is σ = 15816027945696. Its totient is φ = 2632436928000.

The previous prime is 7902661557599. The next prime is 7902661557607. The reversal of 7902661557606 is 6067551662097.

It is a self number, because there is not a number n which added to its sum of digits gives 7902661557606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7902661557607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60714876 + ... + 60844896.

It is an arithmetic number, because the mean of its divisors is an integer number (494250873303).

Almost surely, 2^{7902661557606} is an apocalyptic number.

7902661557606 is an abundant number, since it is smaller than the sum of its proper divisors (7913366388090).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7902661557606 is a wasteful number, since it uses less digits than its factorization.

7902661557606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136808.

The product of its (nonzero) digits is 28576800, while the sum is 60.

The spelling of 7902661557606 in words is "seven trillion, nine hundred two billion, six hundred sixty-one million, five hundred fifty-seven thousand, six hundred six".