2158895195370 has 128 divisors (see below), whose sum is σ = 5787829831680. Its totient is φ = 572634316800.

The previous prime is 2158895195363. The next prime is 2158895195371. The reversal of 2158895195370 is 735915988512.

2158895195370 is a `hidden beast` number, since 2 + 1 + 5 + 8 + 8 + 95 + 1 + 9 + 537 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2158895195298 and 2158895195307.

It is not an unprimeable number, because it can be changed into a prime (2158895195371) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 48620199 + ... + 48664581.

It is an arithmetic number, because the mean of its divisors is an integer number (45217420560).

Almost surely, 2^{2158895195370} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2158895195370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2893914915840).

2158895195370 is an abundant number, since it is smaller than the sum of its proper divisors (3628934636310).

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

2158895195370 is a wasteful number, since it uses less digits than its factorization.

2158895195370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45357 (or 45351 counting only the distinct ones).

The product of its (nonzero) digits is 27216000, while the sum is 63.

The spelling of 2158895195370 in words is "two trillion, one hundred fifty-eight billion, eight hundred ninety-five million, one hundred ninety-five thousand, three hundred seventy".