2557123843000 has 128 divisors (see below), whose sum is σ = 6155049176640. Its totient is φ = 993958080000.

The previous prime is 2557123842971. The next prime is 2557123843003. The reversal of 2557123843000 is 3483217552.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2557123843003) 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, 4810470 + ... + 5315530.

Almost surely, 2^{2557123843000} is an apocalyptic number.

2557123843000 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 2557123843000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3077524588320).

2557123843000 is an abundant number, since it is smaller than the sum of its proper divisors (3597925333640).

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

2557123843000 is a wasteful number, since it uses less digits than its factorization.

2557123843000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505226 (or 505212 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 2557123843000 in words is "two trillion, five hundred fifty-seven billion, one hundred twenty-three million, eight hundred forty-three thousand".