20848724431 has 2 divisors, whose sum is σ = 20848724432. Its totient is φ = 20848724430.

The previous prime is 20848724383. The next prime is 20848724437. The reversal of 20848724431 is 13442784802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20848724431 - 2¹⁹ = 20848200143 is a prime.

It is a super-2 number, since 2×20848724431² (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 (20848724437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10424362215 + 10424362216.

It is an arithmetic number, because the mean of its divisors is an integer number (10424362216).

Almost surely, 2^20848724431 is an apocalyptic number.

20848724431 is a deficient number, since it is larger than the sum of its proper divisors (1).

20848724431 is an equidigital number, since it uses as much as digits as its factorization.

20848724431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 344064, while the sum is 43.

The spelling of 20848724431 in words is "twenty billion, eight hundred forty-eight million, seven hundred twenty-four thousand, four hundred thirty-one".