2545312215420 has 72 divisors (see below), whose sum is σ = 8314686578016. Its totient is φ = 626538390912.

The previous prime is 2545312215419. The next prime is 2545312215469. The reversal of 2545312215420 is 245122135452.

2545312215420 is a `hidden beast` number, since 2 + 5 + 4 + 5 + 3 + 1 + 221 + 5 + 420 = 666.

It is a super-2 number, since 2×2545312215420² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 543867792 + ... + 543872471.

It is an arithmetic number, because the mean of its divisors is an integer number (115481758028).

Almost surely, 2^{2545312215420} is an apocalyptic number.

2545312215420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2545312215420 is an abundant number, since it is smaller than the sum of its proper divisors (5769374362596).

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

2545312215420 is a wasteful number, since it uses less digits than its factorization.

2545312215420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087740291 (or 1087740286 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The spelling of 2545312215420 in words is "two trillion, five hundred forty-five billion, three hundred twelve million, two hundred fifteen thousand, four hundred twenty".