2645657658356 has 12 divisors (see below), whose sum is σ = 4673171004768. Its totient is φ = 1310465942712.

The previous prime is 2645657658317. The next prime is 2645657658373. The reversal of 2645657658356 is 6538567565462.

It is a happy number.

It is a congruent number.

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, 3090721136 + ... + 3090721991.

It is an arithmetic number, because the mean of its divisors is an integer number (389430917064).

Almost surely, 2^{2645657658356} is an apocalyptic number.

It is an amenable number.

2645657658356 is a deficient number, since it is larger than the sum of its proper divisors (2027513346412).

2645657658356 is a wasteful number, since it uses less digits than its factorization.

2645657658356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6181443238 (or 6181443236 counting only the distinct ones).

The product of its digits is 1088640000, while the sum is 68.

The spelling of 2645657658356 in words is "two trillion, six hundred forty-five billion, six hundred fifty-seven million, six hundred fifty-eight thousand, three hundred fifty-six".