2152857677850 has 960 divisors, whose sum is σ = 7003183017600. Its totient is φ = 485388288000.

The previous prime is 2152857677843. The next prime is 2152857677857. The reversal of 2152857677850 is 587767582512.

2152857677850 is a `hidden beast` number, since 2 + 1 + 5 + 2 + 8 + 576 + 7 + 7 + 8 + 50 = 666.

It is an interprime number because it is at equal distance from previous prime (2152857677843) and next prime (2152857677857).

It is not an unprimeable number, because it can be changed into a prime (2152857677857) by changing a digit.

It is a polite number, since it can be written in 479 ways as a sum of consecutive naturals, for example, 5138084941 + ... + 5138085359.

It is an arithmetic number, because the mean of its divisors is an integer number (7294982310).

Almost surely, 2^{2152857677850} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2152857677850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3501591508800).

2152857677850 is an abundant number, since it is smaller than the sum of its proper divisors (4850325339750).

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

2152857677850 is a wasteful number, since it uses less digits than its factorization.

2152857677850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621 (or 607 counting only the distinct ones).

The product of its (nonzero) digits is 65856000, while the sum is 63.

The spelling of 2152857677850 in words is "two trillion, one hundred fifty-two billion, eight hundred fifty-seven million, six hundred seventy-seven thousand, eight hundred fifty".