2251513346020 has 24 divisors (see below), whose sum is σ = 4728540915000. Its totient is φ = 900536216832.

The previous prime is 2251513345981. The next prime is 2251513346021. The reversal of 2251513346020 is 206433151522.

It can be written as a sum of positive squares in 4 ways, for example, as 577248676 + 2250936097344 = 24026^2 + 1500312^2 .

It is not an unprimeable number, because it can be changed into a prime (2251513346021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4052595 + ... + 4574554.

It is an arithmetic number, because the mean of its divisors is an integer number (197022538125).

Almost surely, 2^{2251513346020} is an apocalyptic number.

2251513346020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2251513346020 is an abundant number, since it is smaller than the sum of its proper divisors (2477027568980).

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

2251513346020 is a wasteful number, since it uses less digits than its factorization.

2251513346020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8640207 (or 8640205 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 2251513346020 its reverse (206433151522), we get a palindrome (2457946497542).

The spelling of 2251513346020 in words is "two trillion, two hundred fifty-one billion, five hundred thirteen million, three hundred forty-six thousand, twenty".