2157593144784 has 640 divisors, whose sum is σ = 7614171709440. Its totient is φ = 513729216000.

The previous prime is 2157593144783. The next prime is 2157593144813. The reversal of 2157593144784 is 4874413957512.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157593144783) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 263406129 + ... + 263414319.

It is an arithmetic number, because the mean of its divisors is an integer number (11897143296).

Almost surely, 2^{2157593144784} is an apocalyptic number.

2157593144784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2157593144784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3807085854720).

2157593144784 is an abundant number, since it is smaller than the sum of its proper divisors (5456578564656).

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

2157593144784 is a wasteful number, since it uses less digits than its factorization.

2157593144784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8292 (or 8264 counting only the distinct ones).

The product of its digits is 33868800, while the sum is 60.

The spelling of 2157593144784 in words is "two trillion, one hundred fifty-seven billion, five hundred ninety-three million, one hundred forty-four thousand, seven hundred eighty-four".