20653292431 has 2 divisors, whose sum is σ = 20653292432. Its totient is φ = 20653292430.

The previous prime is 20653292393. The next prime is 20653292447. The reversal of 20653292431 is 13429235602.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20653292431 is a prime.

It is a super-2 number, since 2×20653292431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20653292531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10326646215 + 10326646216.

It is an arithmetic number, because the mean of its divisors is an integer number (10326646216).

Almost surely, 2^20653292431 is an apocalyptic number.

20653292431 is a deficient number, since it is larger than the sum of its proper divisors (1).

20653292431 is an equidigital number, since it uses as much as digits as its factorization.

20653292431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 20653292431 in words is "twenty billion, six hundred fifty-three million, two hundred ninety-two thousand, four hundred thirty-one".