2540433042551 has 8 divisors (see below), whose sum is σ = 2558790474240. Its totient is φ = 2522076767352.

The previous prime is 2540433042527. The next prime is 2540433042649. The reversal of 2540433042551 is 1552403340452.

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

It is a cyclic number.

It is not a de Polignac number, because 2540433042551 - 2¹⁸ = 2540432780407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540433041551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4392986 + ... + 4937528.

It is an arithmetic number, because the mean of its divisors is an integer number (319848809280).

Almost surely, 2^{2540433042551} is an apocalyptic number.

2540433042551 is a deficient number, since it is larger than the sum of its proper divisors (18357431689).

2540433042551 is a wasteful number, since it uses less digits than its factorization.

2540433042551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578245.

The product of its (nonzero) digits is 288000, while the sum is 38.

The spelling of 2540433042551 in words is "two trillion, five hundred forty billion, four hundred thirty-three million, forty-two thousand, five hundred fifty-one".