2157075705000 has 80 divisors (see below), whose sum is σ = 6738704549280. Its totient is φ = 575220184000.

The previous prime is 2157075704989. The next prime is 2157075705007. The reversal of 2157075705000 is 5075707512.

It is a self number, because there is not a number n which added to its sum of digits gives 2157075705000.

It is not an unprimeable number, because it can be changed into a prime (2157075705007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 71887524 + ... + 71917523.

It is an arithmetic number, because the mean of its divisors is an integer number (84233806866).

Almost surely, 2^{2157075705000} is an apocalyptic number.

2157075705000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2157075705000 is an abundant number, since it is smaller than the sum of its proper divisors (4581628844280).

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

2157075705000 is a wasteful number, since it uses less digits than its factorization.

2157075705000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143805076 (or 143805057 counting only the distinct ones).

The product of its (nonzero) digits is 85750, while the sum is 39.

The spelling of 2157075705000 in words is "two trillion, one hundred fifty-seven billion, seventy-five million, seven hundred five thousand".