2391994043260 has 48 divisors (see below), whose sum is σ = 5050125843840. Its totient is φ = 951672133440.

The previous prime is 2391994043071. The next prime is 2391994043261. The reversal of 2391994043260 is 623404991932.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2391994043198 and 2391994043207.

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 15 ways as a sum of consecutive naturals, for example, 6657127 + ... + 7007233.

It is an arithmetic number, because the mean of its divisors is an integer number (105210955080).

Almost surely, 2^{2391994043260} is an apocalyptic number.

2391994043260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2391994043260 is an abundant number, since it is smaller than the sum of its proper divisors (2658131800580).

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

2391994043260 is a wasteful number, since it uses less digits than its factorization.

2391994043260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351946 (or 351944 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 52.

The spelling of 2391994043260 in words is "two trillion, three hundred ninety-one billion, nine hundred ninety-four million, forty-three thousand, two hundred sixty".