402791541291 has 32 divisors (see below), whose sum is σ = 601356748800. Its totient is φ = 266446635840.

The previous prime is 402791541289. The next prime is 402791541319. The reversal of 402791541291 is 192145197204.

402791541291 is a `hidden beast` number, since 40 + 27 + 91 + 5 + 412 + 91 = 666.

It is not a de Polignac number, because 402791541291 - 2¹ = 402791541289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402791541221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8524830 + ... + 8571948.

It is an arithmetic number, because the mean of its divisors is an integer number (18792398400).

Almost surely, 2^402791541291 is an apocalyptic number.

402791541291 is a deficient number, since it is larger than the sum of its proper divisors (198565207509).

402791541291 is a wasteful number, since it uses less digits than its factorization.

402791541291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49576 (or 49570 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 402791541291 in words is "four hundred two billion, seven hundred ninety-one million, five hundred forty-one thousand, two hundred ninety-one".