2451020022540 has 72 divisors (see below), whose sum is σ = 7434889010640. Its totient is φ = 653594062464.

The previous prime is 2451020022497. The next prime is 2451020022547. The reversal of 2451020022540 is 452200201542.

2451020022540 is a `hidden beast` number, since 2 + 451 + 0 + 200 + 2 + 2 + 5 + 4 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (2451020022547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18650742 + ... + 18781698.

It is an arithmetic number, because the mean of its divisors is an integer number (103262347370).

Almost surely, 2^{2451020022540} is an apocalyptic number.

2451020022540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2451020022540 is an abundant number, since it is smaller than the sum of its proper divisors (4983868988100).

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

2451020022540 is a wasteful number, since it uses less digits than its factorization.

2451020022540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234951 (or 234946 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The spelling of 2451020022540 in words is "two trillion, four hundred fifty-one billion, twenty million, twenty-two thousand, five hundred forty".