12540632555015 has 8 divisors (see below), whose sum is σ = 15254906450928. Its totient is φ = 9895074454080.

The previous prime is 12540632554981. The next prime is 12540632555021. The reversal of 12540632555015 is 51055523604521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-12540632555015 is a prime.

It is a super-3 number, since 3×12540632555015³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

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, 17178948341 + ... + 17178949070.

It is an arithmetic number, because the mean of its divisors is an integer number (1906863306366).

Almost surely, 2^{12540632555015} is an apocalyptic number.

12540632555015 is a deficient number, since it is larger than the sum of its proper divisors (2714273895913).

12540632555015 is an equidigital number, since it uses as much as digits as its factorization.

12540632555015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34357897489.

The product of its (nonzero) digits is 900000, while the sum is 44.

The spelling of 12540632555015 in words is "twelve trillion, five hundred forty billion, six hundred thirty-two million, five hundred fifty-five thousand, fifteen".