20574277943 has 2 divisors, whose sum is σ = 20574277944. Its totient is φ = 20574277942.

The previous prime is 20574277939. The next prime is 20574277949. The reversal of 20574277943 is 34977247502.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20574277943 - 2² = 20574277939 is a prime.

It is a super-2 number, since 2×20574277943² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 20574277891 and 20574277900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20574277949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10287138971 + 10287138972.

It is an arithmetic number, because the mean of its divisors is an integer number (10287138972).

Almost surely, 2^20574277943 is an apocalyptic number.

20574277943 is a deficient number, since it is larger than the sum of its proper divisors (1).

20574277943 is an equidigital number, since it uses as much as digits as its factorization.

20574277943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2963520, while the sum is 50.

The spelling of 20574277943 in words is "twenty billion, five hundred seventy-four million, two hundred seventy-seven thousand, nine hundred forty-three".