581382970940 has 48 divisors (see below), whose sum is σ = 1241920512000. Its totient is φ = 228552140352.

The previous prime is 581382970919. The next prime is 581382970967. The reversal of 581382970940 is 49079283185.

It is a congruent 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, 4618961 + ... + 4743159.

It is an arithmetic number, because the mean of its divisors is an integer number (25873344000).

Almost surely, 2^581382970940 is an apocalyptic number.

It is an amenable number.

581382970940 is an abundant number, since it is smaller than the sum of its proper divisors (660537541060).

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

581382970940 is a wasteful number, since it uses less digits than its factorization.

581382970940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128234 (or 128232 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 581382970940 in words is "five hundred eighty-one billion, three hundred eighty-two million, nine hundred seventy thousand, nine hundred forty".