20623244758156 has 12 divisors (see below), whose sum is σ = 37659838254192. Its totient is φ = 9863290971248.

The previous prime is 20623244758153. The next prime is 20623244758163. The reversal of 20623244758156 is 65185744232602.

It is a junction number, because it is equal to n+sod(n) for n = 20623244758097 and 20623244758106.

It is not an unprimeable number, because it can be changed into a prime (20623244758153) 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, 112082851855 + ... + 112082852038.

It is an arithmetic number, because the mean of its divisors is an integer number (3138319854516).

Almost surely, 2^{20623244758156} is an apocalyptic number.

It is an amenable number.

20623244758156 is a deficient number, since it is larger than the sum of its proper divisors (17036593496036).

20623244758156 is a wasteful number, since it uses less digits than its factorization.

20623244758156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224165703920 (or 224165703918 counting only the distinct ones).

The product of its (nonzero) digits is 19353600, while the sum is 55.

The spelling of 20623244758156 in words is "twenty trillion, six hundred twenty-three billion, two hundred forty-four million, seven hundred fifty-eight thousand, one hundred fifty-six".