20113515542455 has 8 divisors (see below), whose sum is σ = 24156552456432. Its totient is φ = 16077256563648.

The previous prime is 20113515542441. The next prime is 20113515542467. The reversal of 20113515542455 is 55424551531102.

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 20113515542455 - 2¹⁵ = 20113515509687 is a prime.

It is a Duffinian number.

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, 1694477262 + ... + 1694489131.

It is an arithmetic number, because the mean of its divisors is an integer number (3019569057054).

Almost surely, 2^{20113515542455} is an apocalyptic number.

20113515542455 is a deficient number, since it is larger than the sum of its proper divisors (4043036913977).

20113515542455 is a wasteful number, since it uses less digits than its factorization.

20113515542455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388967585.

The product of its (nonzero) digits is 600000, while the sum is 43.

The spelling of 20113515542455 in words is "twenty trillion, one hundred thirteen billion, five hundred fifteen million, five hundred forty-two thousand, four hundred fifty-five".