402791541289 has 2 divisors, whose sum is σ = 402791541290. Its totient is φ = 402791541288.

The previous prime is 402791541277. The next prime is 402791541319. The reversal of 402791541289 is 982145197204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 388178841600 + 14612699689 = 623040^2 + 120883^2 .

It is a cyclic number.

It is not a de Polignac number, because 402791541289 - 2³³ = 394201606697 is a prime.

It is not a weakly prime, because it can be changed into another prime (402791541209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201395770644 + 201395770645.

It is an arithmetic number, because the mean of its divisors is an integer number (201395770645).

Almost surely, 2^402791541289 is an apocalyptic number.

It is an amenable number.

402791541289 is a deficient number, since it is larger than the sum of its proper divisors (1).

402791541289 is an equidigital number, since it uses as much as digits as its factorization.

402791541289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 402791541289 in words is "four hundred two billion, seven hundred ninety-one million, five hundred forty-one thousand, two hundred eighty-nine".