2591421818842 has 16 divisors (see below), whose sum is σ = 3980542338432. Its totient is φ = 1264619996640.

The previous prime is 2591421818837. The next prime is 2591421818891. The reversal of 2591421818842 is 2488181241952.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11291698 + ... + 11518909.

It is an arithmetic number, because the mean of its divisors is an integer number (248783896152).

Almost surely, 2^{2591421818842} is an apocalyptic number.

2591421818842 is a deficient number, since it is larger than the sum of its proper divisors (1389120519590).

2591421818842 is a wasteful number, since it uses less digits than its factorization.

2591421818842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22811973.

The product of its digits is 2949120, while the sum is 55.

The spelling of 2591421818842 in words is "two trillion, five hundred ninety-one billion, four hundred twenty-one million, eight hundred eighteen thousand, eight hundred forty-two".