2321256640434 has 32 divisors (see below), whose sum is σ = 4882506301440. Its totient is φ = 734283163152.

The previous prime is 2321256640393. The next prime is 2321256640481. The reversal of 2321256640434 is 4340466521232.

It is a happy number.

It is a Curzon number.

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, 66205704 + ... + 66240755.

It is an arithmetic number, because the mean of its divisors is an integer number (152578321920).

Almost surely, 2^{2321256640434} is an apocalyptic number.

2321256640434 is an abundant number, since it is smaller than the sum of its proper divisors (2561249661006).

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

2321256640434 is a wasteful number, since it uses less digits than its factorization.

2321256640434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132446614.

The product of its (nonzero) digits is 829440, while the sum is 42.

The spelling of 2321256640434 in words is "two trillion, three hundred twenty-one billion, two hundred fifty-six million, six hundred forty thousand, four hundred thirty-four".