591391422402 has 32 divisors (see below), whose sum is σ = 1290582089280. Its totient is φ = 179171531520.

The previous prime is 591391422389. The next prime is 591391422421. The reversal of 591391422402 is 204224193195.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 635283 + ... + 1259510.

It is an arithmetic number, because the mean of its divisors is an integer number (40330690290).

Almost surely, 2^591391422402 is an apocalyptic number.

591391422402 is an abundant number, since it is smaller than the sum of its proper divisors (699190666878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

591391422402 is a wasteful number, since it uses less digits than its factorization.

591391422402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1899538.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 591391422402 in words is "five hundred ninety-one billion, three hundred ninety-one million, four hundred twenty-two thousand, four hundred two".