20261663153124 has 24 divisors (see below), whose sum is σ = 48554976566208. Its totient is φ = 6571350211680.

The previous prime is 20261663153119. The next prime is 20261663153159. The reversal of 20261663153124 is 42135136616202.

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, 22817187792 + ... + 22817188679.

It is an arithmetic number, because the mean of its divisors is an integer number (2023124023592).

Almost surely, 2^{20261663153124} is an apocalyptic number.

It is an amenable number.

20261663153124 is an abundant number, since it is smaller than the sum of its proper divisors (28293313413084).

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

20261663153124 is a wasteful number, since it uses less digits than its factorization.

20261663153124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45634376515 (or 45634376513 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

Adding to 20261663153124 its reverse (42135136616202), we get a palindrome (62396799769326).

The spelling of 20261663153124 in words is "twenty trillion, two hundred sixty-one billion, six hundred sixty-three million, one hundred fifty-three thousand, one hundred twenty-four".