2540615316406 has 8 divisors (see below), whose sum is σ = 3810997327464. Its totient is φ = 1270282873920.

The previous prime is 2540615316401. The next prime is 2540615316427. The reversal of 2540615316406 is 6046135160452.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540615316401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12263740 + ... + 12469183.

It is an arithmetic number, because the mean of its divisors is an integer number (476374665933).

Almost surely, 2^{2540615316406} is an apocalyptic number.

2540615316406 is a deficient number, since it is larger than the sum of its proper divisors (1270382011058).

2540615316406 is a wasteful number, since it uses less digits than its factorization.

2540615316406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24784286.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 2540615316406 in words is "two trillion, five hundred forty billion, six hundred fifteen million, three hundred sixteen thousand, four hundred six".