20502264255601 has 4 divisors (see below), whose sum is σ = 20503738934272. Its totient is φ = 20500789576932.

The previous prime is 20502264255589. The next prime is 20502264255631. The reversal of 20502264255601 is 10655246220502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20502264255601 - 2¹¹ = 20502264253553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20502264255631) 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, 737318481 + ... + 737346286.

It is an arithmetic number, because the mean of its divisors is an integer number (5125934733568).

Almost surely, 2^{20502264255601} is an apocalyptic number.

It is an amenable number.

20502264255601 is a deficient number, since it is larger than the sum of its proper divisors (1474678671).

20502264255601 is a wasteful number, since it uses less digits than its factorization.

20502264255601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474678670.

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 20502264255601 in words is "twenty trillion, five hundred two billion, two hundred sixty-four million, two hundred fifty-five thousand, six hundred one".