2251804488940 has 12 divisors (see below), whose sum is σ = 4728789426816. Its totient is φ = 900721795568.

The previous prime is 2251804488919. The next prime is 2251804488943. The reversal of 2251804488940 is 498844081522.

It is not an unprimeable number, because it can be changed into a prime (2251804488943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56295112204 + ... + 56295112243.

It is an arithmetic number, because the mean of its divisors is an integer number (394065785568).

Almost surely, 2^{2251804488940} is an apocalyptic number.

2251804488940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2251804488940 is an abundant number, since it is smaller than the sum of its proper divisors (2476984937876).

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

2251804488940 is a wasteful number, since it uses less digits than its factorization.

2251804488940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112590224456 (or 112590224454 counting only the distinct ones).

The product of its (nonzero) digits is 5898240, while the sum is 55.

The spelling of 2251804488940 in words is "two trillion, two hundred fifty-one billion, eight hundred four million, four hundred eighty-eight thousand, nine hundred forty".