2540772807 has 4 divisors (see below), whose sum is σ = 3387697080. Its totient is φ = 1693848536.

The previous prime is 2540772797. The next prime is 2540772827. The reversal of 2540772807 is 7082770452.

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 2540772807 - 2⁸ = 2540772551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540772827) 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, 423462132 + ... + 423462137.

It is an arithmetic number, because the mean of its divisors is an integer number (846924270).

Almost surely, 2^2540772807 is an apocalyptic number.

2540772807 is a deficient number, since it is larger than the sum of its proper divisors (846924273).

2540772807 is an equidigital number, since it uses as much as digits as its factorization.

2540772807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846924272.

The product of its (nonzero) digits is 219520, while the sum is 42.

The square root of 2540772807 is about 50406.0790679061. The cubic root of 2540772807 is about 1364.5473516915.

The spelling of 2540772807 in words is "two billion, five hundred forty million, seven hundred seventy-two thousand, eight hundred seven".