2391994043262 has 24 divisors (see below), whose sum is σ = 5182857371640. Its totient is φ = 797300022960.

The previous prime is 2391994043261. The next prime is 2391994043267. The reversal of 2391994043262 is 2623404991932.

2391994043262 is a `hidden beast` number, since 2 + 3 + 91 + 99 + 404 + 3 + 2 + 62 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2391994043199 and 2391994043208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2391994043261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2137189 + ... + 3058032.

It is an arithmetic number, because the mean of its divisors is an integer number (215952390485).

Almost surely, 2^{2391994043262} is an apocalyptic number.

2391994043262 is an abundant number, since it is smaller than the sum of its proper divisors (2790863328378).

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

2391994043262 is a wasteful number, since it uses less digits than its factorization.

2391994043262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5220808 (or 5220805 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 54.

The spelling of 2391994043262 in words is "two trillion, three hundred ninety-one billion, nine hundred ninety-four million, forty-three thousand, two hundred sixty-two".