20741971039 has 2 divisors, whose sum is σ = 20741971040. Its totient is φ = 20741971038.

The previous prime is 20741970961. The next prime is 20741971043. The reversal of 20741971039 is 93017914702.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20741971039 - 2²³ = 20733582431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20741970986 and 20741971004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20741971639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10370985519 + 10370985520.

It is an arithmetic number, because the mean of its divisors is an integer number (10370985520).

Almost surely, 2^20741971039 is an apocalyptic number.

20741971039 is a deficient number, since it is larger than the sum of its proper divisors (1).

20741971039 is an equidigital number, since it uses as much as digits as its factorization.

20741971039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 43.

The spelling of 20741971039 in words is "twenty billion, seven hundred forty-one million, nine hundred seventy-one thousand, thirty-nine".