2042854664677 has 2 divisors, whose sum is σ = 2042854664678. Its totient is φ = 2042854664676.

The previous prime is 2042854664657. The next prime is 2042854664693. The reversal of 2042854664677 is 7764664582402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1769110146241 + 273744518436 = 1330079^2 + 523206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2042854664677 is a prime.

It is a super-2 number, since 2×2042854664677² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2042854664657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021427332338 + 1021427332339.

It is an arithmetic number, because the mean of its divisors is an integer number (1021427332339).

Almost surely, 2^{2042854664677} is an apocalyptic number.

It is an amenable number.

2042854664677 is a deficient number, since it is larger than the sum of its proper divisors (1).

2042854664677 is an equidigital number, since it uses as much as digits as its factorization.

2042854664677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108380160, while the sum is 61.

The spelling of 2042854664677 in words is "two trillion, forty-two billion, eight hundred fifty-four million, six hundred sixty-four thousand, six hundred seventy-seven".