20263215124 has 12 divisors (see below), whose sum is σ = 36683406900. Its totient is φ = 9782241728.

The previous prime is 20263215109. The next prime is 20263215157. The reversal of 20263215124 is 42151236202.

It can be written as a sum of positive squares in 2 ways, for example, as 12148448400 + 8114766724 = 110220^2 + 90082^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20263215092 and 20263215101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87341329 + ... + 87341560.

It is an arithmetic number, because the mean of its divisors is an integer number (3056950575).

Almost surely, 2^20263215124 is an apocalyptic number.

It is an amenable number.

20263215124 is a deficient number, since it is larger than the sum of its proper divisors (16420191776).

20263215124 is a wasteful number, since it uses less digits than its factorization.

20263215124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174682922 (or 174682920 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The spelling of 20263215124 in words is "twenty billion, two hundred sixty-three million, two hundred fifteen thousand, one hundred twenty-four".