5001656556565 has 8 divisors (see below), whose sum is σ = 6008448570840. Its totient is φ = 3997018109952.

The previous prime is 5001656556553. The next prime is 5001656556601. The reversal of 5001656556565 is 5656556561005.

It can be written as a sum of positive squares in 4 ways, for example, as 374859858564 + 4626796698001 = 612258^2 + 2150999^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 5001656556565 - 2¹⁵ = 5001656523797 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 538386804 + ... + 538396093.

It is an arithmetic number, because the mean of its divisors is an integer number (751056071355).

Almost surely, 2^{5001656556565} is an apocalyptic number.

It is an amenable number.

5001656556565 is a deficient number, since it is larger than the sum of its proper divisors (1006792014275).

5001656556565 is a wasteful number, since it uses less digits than its factorization.

5001656556565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076783831.

The product of its (nonzero) digits is 20250000, while the sum is 55.

The spelling of 5001656556565 in words is "five trillion, one billion, six hundred fifty-six million, five hundred fifty-six thousand, five hundred sixty-five".