2251413232440 has 32 divisors (see below), whose sum is σ = 6754239697680. Its totient is φ = 600376861952.

The previous prime is 2251413232429. The next prime is 2251413232487. The reversal of 2251413232440 is 442323141522.

It is a happy number.

It is a congruent number.

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, 9380888349 + ... + 9380888588.

Almost surely, 2^{2251413232440} is an apocalyptic number.

2251413232440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2251413232440 is an abundant number, since it is smaller than the sum of its proper divisors (4502826465240).

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

2251413232440 is a wasteful number, since it uses less digits than its factorization.

2251413232440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18761776951 (or 18761776947 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 2251413232440 its reverse (442323141522), we get a palindrome (2693736373962).

The spelling of 2251413232440 in words is "two trillion, two hundred fifty-one billion, four hundred thirteen million, two hundred thirty-two thousand, four hundred forty".