20013522757655 has 32 divisors (see below), whose sum is σ = 27517724075520. Its totient is φ = 13688258601600.

The previous prime is 20013522757637. The next prime is 20013522757663. The reversal of 20013522757655 is 55675722531002.

It is not a de Polignac number, because 20013522757655 - 2³⁸ = 19738644850711 is a prime.

It is a super-2 number, since 2×20013522757655² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 445326176 + ... + 445371114.

It is an arithmetic number, because the mean of its divisors is an integer number (859928877360).

Almost surely, 2^{20013522757655} is an apocalyptic number.

20013522757655 is a deficient number, since it is larger than the sum of its proper divisors (7504201317865).

20013522757655 is a wasteful number, since it uses less digits than its factorization.

20013522757655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77399.

The product of its (nonzero) digits is 4410000, while the sum is 50.

The spelling of 20013522757655 in words is "twenty trillion, thirteen billion, five hundred twenty-two million, seven hundred fifty-seven thousand, six hundred fifty-five".