42786400666601 has 2 divisors, whose sum is σ = 42786400666602. Its totient is φ = 42786400666600.

The previous prime is 42786400666567. The next prime is 42786400666637. The reversal of 42786400666601 is 10666600468724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41044267296400 + 1742133370201 = 6406580^2 + 1319899^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42786400666601 is a prime.

It is not a weakly prime, because it can be changed into another prime (42786400666651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21393200333300 + 21393200333301.

It is an arithmetic number, because the mean of its divisors is an integer number (21393200333301).

Almost surely, 2^{42786400666601} is an apocalyptic number.

It is an amenable number.

42786400666601 is a deficient number, since it is larger than the sum of its proper divisors (1).

42786400666601 is an equidigital number, since it uses as much as digits as its factorization.

42786400666601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13934592, while the sum is 56.

The spelling of 42786400666601 in words is "forty-two trillion, seven hundred eighty-six billion, four hundred million, six hundred sixty-six thousand, six hundred one".