2251205143340 has 48 divisors (see below), whose sum is σ = 4751957280000. Its totient is φ = 895830674112.

The previous prime is 2251205143301. The next prime is 2251205143381. The reversal of 2251205143340 is 433415021522.

It is a junction number, because it is equal to n+sod(n) for n = 2251205143297 and 2251205143306.

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, 31274711 + ... + 31346609.

It is an arithmetic number, because the mean of its divisors is an integer number (98999110000).

Almost surely, 2^{2251205143340} is an apocalyptic number.

2251205143340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2251205143340 is an abundant number, since it is smaller than the sum of its proper divisors (2500752136660).

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

2251205143340 is a wasteful number, since it uses less digits than its factorization.

2251205143340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79974 (or 79972 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The spelling of 2251205143340 in words is "two trillion, two hundred fifty-one billion, two hundred five million, one hundred forty-three thousand, three hundred forty".