20653292392 has 8 divisors (see below), whose sum is σ = 38724923250. Its totient is φ = 10326646192.

The previous prime is 20653292371. The next prime is 20653292393. The reversal of 20653292392 is 29329235602.

It can be written as a sum of positive squares in only one way, i.e., 20327345476 + 325946916 = 142574^2 + 18054^2 .

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 (20653292393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1290830767 + ... + 1290830782.

Almost surely, 2^20653292392 is an apocalyptic number.

It is an amenable number.

20653292392 is a deficient number, since it is larger than the sum of its proper divisors (18071630858).

20653292392 is a wasteful number, since it uses less digits than its factorization.

20653292392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2581661555 (or 2581661551 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 43.

The spelling of 20653292392 in words is "twenty billion, six hundred fifty-three million, two hundred ninety-two thousand, three hundred ninety-two".