4020864704957 has 2 divisors, whose sum is σ = 4020864704958. Its totient is φ = 4020864704956.

The previous prime is 4020864704851. The next prime is 4020864704959. The reversal of 4020864704957 is 7594074680204.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3136773956836 + 884090748121 = 1771094^2 + 940261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4020864704957 is a prime.

Together with 4020864704959, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4020864704959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010432352478 + 2010432352479.

It is an arithmetic number, because the mean of its divisors is an integer number (2010432352479).

Almost surely, 2^{4020864704957} is an apocalyptic number.

It is an amenable number.

4020864704957 is a deficient number, since it is larger than the sum of its proper divisors (1).

4020864704957 is an equidigital number, since it uses as much as digits as its factorization.

4020864704957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13547520, while the sum is 56.

The spelling of 4020864704957 in words is "four trillion, twenty billion, eight hundred sixty-four million, seven hundred four thousand, nine hundred fifty-seven".