2538344390400 has 1728 divisors, whose sum is σ = 11513796403200. Its totient is φ = 532858798080.

The previous prime is 2538344390383. The next prime is 2538344390443. The reversal of 2538344390400 is 40934438352.

2538344390400 is a `hidden beast` number, since 2 + 5 + 3 + 83 + 443 + 90 + 40 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1728).

It is a super-2 number, since 2×2538344390400² (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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 5299257361 + ... + 5299257839.

Almost surely, 2^{2538344390400} is an apocalyptic number.

2538344390400 is a gapful number since it is divisible by the number (20) 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 2538344390400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5756898201600).

2538344390400 is an abundant number, since it is smaller than the sum of its proper divisors (8975452012800).

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

2538344390400 is a wasteful number, since it uses less digits than its factorization.

2538344390400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871 (or 846 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 2538344390400 in words is "two trillion, five hundred thirty-eight billion, three hundred forty-four million, three hundred ninety thousand, four hundred".