402696951577 has 2 divisors, whose sum is σ = 402696951578. Its totient is φ = 402696951576.

The previous prime is 402696951557. The next prime is 402696951607. The reversal of 402696951577 is 775159696204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229537768201 + 173159183376 = 479101^2 + 416124^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402696951577 is a prime.

It is not a weakly prime, because it can be changed into another prime (402696951557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201348475788 + 201348475789.

It is an arithmetic number, because the mean of its divisors is an integer number (201348475789).

Almost surely, 2^402696951577 is an apocalyptic number.

It is an amenable number.

402696951577 is a deficient number, since it is larger than the sum of its proper divisors (1).

402696951577 is an equidigital number, since it uses as much as digits as its factorization.

402696951577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28576800, while the sum is 61.

The spelling of 402696951577 in words is "four hundred two billion, six hundred ninety-six million, nine hundred fifty-one thousand, five hundred seventy-seven".