2251373943510 has 64 divisors (see below), whose sum is σ = 6143283970560. Its totient is φ = 586404372960.

The previous prime is 2251373943463. The next prime is 2251373943517. The reversal of 2251373943510 is 153493731522.

2251373943510 is a `hidden beast` number, since 2 + 2 + 513 + 7 + 3 + 94 + 35 + 10 = 666.

It is a super-2 number, since 2×2251373943510² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251373943517) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96946786 + ... + 96970005.

It is an arithmetic number, because the mean of its divisors is an integer number (95988812040).

Almost surely, 2^{2251373943510} is an apocalyptic number.

2251373943510 is an abundant number, since it is smaller than the sum of its proper divisors (3891910027050).

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

2251373943510 is a wasteful number, since it uses less digits than its factorization.

2251373943510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193916850 (or 193916844 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 45.

The spelling of 2251373943510 in words is "two trillion, two hundred fifty-one billion, three hundred seventy-three million, nine hundred forty-three thousand, five hundred ten".