20723222504 has 8 divisors (see below), whose sum is σ = 38856042210. Its totient is φ = 10361611248.

The previous prime is 20723222503. The next prime is 20723222561. The reversal of 20723222504 is 40522232702.

It can be written as a sum of positive squares in only one way, i.e., 15649509604 + 5073712900 = 125098^2 + 71230^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (20723222503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1295201399 + ... + 1295201414.

Almost surely, 2^20723222504 is an apocalyptic number.

It is an amenable number.

20723222504 is a deficient number, since it is larger than the sum of its proper divisors (18132819706).

20723222504 is a wasteful number, since it uses less digits than its factorization.

20723222504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2590402819 (or 2590402815 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 29.

The spelling of 20723222504 in words is "twenty billion, seven hundred twenty-three million, two hundred twenty-two thousand, five hundred four".