2251324021464 has 96 divisors (see below), whose sum is σ = 7378288837920. Its totient is φ = 605398053888.

The previous prime is 2251324021423. The next prime is 2251324021501. The reversal of 2251324021464 is 4641204231522.

2251324021464 is a `hidden beast` number, since 2 + 2 + 5 + 132 + 40 + 21 + 464 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 131371219 + ... + 131388354.

It is an arithmetic number, because the mean of its divisors is an integer number (76857175395).

Almost surely, 2^{2251324021464} is an apocalyptic number.

2251324021464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2251324021464 is an abundant number, since it is smaller than the sum of its proper divisors (5126964816456).

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

2251324021464 is a wasteful number, since it uses less digits than its factorization.

2251324021464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262759609 (or 262759602 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

Adding to 2251324021464 its reverse (4641204231522), we get a palindrome (6892528252986).

The spelling of 2251324021464 in words is "two trillion, two hundred fifty-one billion, three hundred twenty-four million, twenty-one thousand, four hundred sixty-four".