2540411515451 has 4 divisors (see below), whose sum is σ = 2543749770504. Its totient is φ = 2537073260400.

The previous prime is 2540411515441. The next prime is 2540411515487. The reversal of 2540411515451 is 1545151140452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2540411515451 - 2¹⁸ = 2540411253307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2540411515441) 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, 1669126385 + ... + 1669127906.

It is an arithmetic number, because the mean of its divisors is an integer number (635937442626).

Almost surely, 2^{2540411515451} is an apocalyptic number.

2540411515451 is a deficient number, since it is larger than the sum of its proper divisors (3338255053).

2540411515451 is an equidigital number, since it uses as much as digits as its factorization.

2540411515451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338255052.

The product of its (nonzero) digits is 80000, while the sum is 38.

The spelling of 2540411515451 in words is "two trillion, five hundred forty billion, four hundred eleven million, five hundred fifteen thousand, four hundred fifty-one".