402550131051427 has 2 divisors, whose sum is σ = 402550131051428. Its totient is φ = 402550131051426.

The previous prime is 402550131051401. The next prime is 402550131051443. The reversal of 402550131051427 is 724150131055204.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402550131051427 - 2³⁵ = 402515771313059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 402550131051427.

It is not a weakly prime, because it can be changed into another prime (402550131052427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201275065525713 + 201275065525714.

It is an arithmetic number, because the mean of its divisors is an integer number (201275065525714).

Almost surely, 2^{402550131051427} is an apocalyptic number.

402550131051427 is a deficient number, since it is larger than the sum of its proper divisors (1).

402550131051427 is an equidigital number, since it uses as much as digits as its factorization.

402550131051427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168000, while the sum is 40.

The spelling of 402550131051427 in words is "four hundred two trillion, five hundred fifty billion, one hundred thirty-one million, fifty-one thousand, four hundred twenty-seven".