2161362253248 has 280 divisors, whose sum is σ = 7214875835904. Its totient is φ = 633830054400.

The previous prime is 2161362253247. The next prime is 2161362253277. The reversal of 2161362253248 is 8423522631612.

2161362253248 is a `hidden beast` number, since 2 + 1 + 6 + 13 + 62 + 2 + 532 + 48 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161362253247) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1156411 + ... + 2379077.

Almost surely, 2^{2161362253248} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2161362253248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3607437917952).

2161362253248 is an abundant number, since it is smaller than the sum of its proper divisors (5053513582656).

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

2161362253248 is a wasteful number, since it uses less digits than its factorization.

2161362253248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222733 (or 1222714 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The spelling of 2161362253248 in words is "two trillion, one hundred sixty-one billion, three hundred sixty-two million, two hundred fifty-three thousand, two hundred forty-eight".