2115256416540 has 24 divisors (see below), whose sum is σ = 5922717966480. Its totient is φ = 564068377728.

The previous prime is 2115256416467. The next prime is 2115256416583. The reversal of 2115256416540 is 456146525112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2115256416492 and 2115256416501.

It is a congruent number.

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, 17627136745 + ... + 17627136864.

It is an arithmetic number, because the mean of its divisors is an integer number (246779915270).

Almost surely, 2^{2115256416540} is an apocalyptic number.

2115256416540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2115256416540 is an abundant number, since it is smaller than the sum of its proper divisors (3807461549940).

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

2115256416540 is a wasteful number, since it uses less digits than its factorization.

2115256416540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35254273621 (or 35254273619 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 42.

The spelling of 2115256416540 in words is "two trillion, one hundred fifteen billion, two hundred fifty-six million, four hundred sixteen thousand, five hundred forty".