2731451646540 has 24 divisors (see below), whose sum is σ = 7648064610480. Its totient is φ = 728387105728.

The previous prime is 2731451646499. The next prime is 2731451646569. The reversal of 2731451646540 is 456461541372.

It is a self number, because there is not a number n which added to its sum of digits gives 2731451646540.

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, 22762096995 + ... + 22762097114.

It is an arithmetic number, because the mean of its divisors is an integer number (318669358770).

Almost surely, 2^{2731451646540} is an apocalyptic number.

2731451646540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2731451646540 is an abundant number, since it is smaller than the sum of its proper divisors (4916612963940).

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

2731451646540 is a wasteful number, since it uses less digits than its factorization.

2731451646540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45524194121 (or 45524194119 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 48.

The spelling of 2731451646540 in words is "two trillion, seven hundred thirty-one billion, four hundred fifty-one million, six hundred forty-six thousand, five hundred forty".