2591842391868 has 96 divisors (see below), whose sum is σ = 6158186406400. Its totient is φ = 848243404800.

The previous prime is 2591842391861. The next prime is 2591842391869. The reversal of 2591842391868 is 8681932481952.

It is a junction number, because it is equal to n+sod(n) for n = 2591842391799 and 2591842391808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2591842391861) 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, 418103433 + ... + 418109631.

Almost surely, 2^{2591842391868} is an apocalyptic number.

It is an amenable number.

2591842391868 is an abundant number, since it is smaller than the sum of its proper divisors (3566344014532).

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

2591842391868 is a wasteful number, since it uses less digits than its factorization.

2591842391868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7907 (or 7905 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 66.

The spelling of 2591842391868 in words is "two trillion, five hundred ninety-one billion, eight hundred forty-two million, three hundred ninety-one thousand, eight hundred sixty-eight".