20255535155022 has 16 divisors (see below), whose sum is σ = 40511216143872. Its totient is φ = 6751820746040.

The previous prime is 20255535154993. The next prime is 20255535155033. The reversal of 20255535155022 is 22055153555202.

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 7 ways as a sum of consecutive naturals, for example, 4227504 + ... + 7640867.

It is an arithmetic number, because the mean of its divisors is an integer number (2531951008992).

Almost surely, 2^{20255535155022} is an apocalyptic number.

20255535155022 is an abundant number, since it is smaller than the sum of its proper divisors (20255680988850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20255535155022 is a wasteful number, since it uses less digits than its factorization.

20255535155022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12152823.

The product of its (nonzero) digits is 750000, while the sum is 42.

The spelling of 20255535155022 in words is "twenty trillion, two hundred fifty-five billion, five hundred thirty-five million, one hundred fifty-five thousand, twenty-two".