2545307678220 has 24 divisors (see below), whose sum is σ = 7126861499184. Its totient is φ = 678748714176.

The previous prime is 2545307678203. The next prime is 2545307678257. The reversal of 2545307678220 is 228767035452.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21210897259 + ... + 21210897378.

It is an arithmetic number, because the mean of its divisors is an integer number (296952562466).

Almost surely, 2^{2545307678220} is an apocalyptic number.

2545307678220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2545307678220 is an abundant number, since it is smaller than the sum of its proper divisors (4581553820964).

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

2545307678220 is a wasteful number, since it uses less digits than its factorization.

2545307678220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42421794649 (or 42421794647 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 51.

The spelling of 2545307678220 in words is "two trillion, five hundred forty-five billion, three hundred seven million, six hundred seventy-eight thousand, two hundred twenty".