2251566545202 has 160 divisors (see below), whose sum is σ = 5544944342784. Its totient is φ = 678674505600.

The previous prime is 2251566545161. The next prime is 2251566545203. The reversal of 2251566545202 is 2025456651522.

2251566545202 is a `hidden beast` number, since 2 + 2 + 5 + 15 + 66 + 54 + 520 + 2 = 666.

2251566545202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2251566545203) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 23427627 + ... + 23523537.

Almost surely, 2^{2251566545202} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2251566545202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2772472171392).

2251566545202 is an abundant number, since it is smaller than the sum of its proper divisors (3293377797582).

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

2251566545202 is a wasteful number, since it uses less digits than its factorization.

2251566545202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96166 (or 96157 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 45.

The spelling of 2251566545202 in words is "two trillion, two hundred fifty-one billion, five hundred sixty-six million, five hundred forty-five thousand, two hundred two".