2640260451 has 4 divisors (see below), whose sum is σ = 3520347272. Its totient is φ = 1760173632.

The previous prime is 2640260437. The next prime is 2640260453. The reversal of 2640260451 is 1540620462.

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

It is not a de Polignac number, because 2640260451 - 2¹³ = 2640252259 is a prime.

It is a super-2 number, since 2×2640260451² = 13941950498229446802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2640260453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440043406 + ... + 440043411.

It is an arithmetic number, because the mean of its divisors is an integer number (880086818).

Almost surely, 2^2640260451 is an apocalyptic number.

2640260451 is a deficient number, since it is larger than the sum of its proper divisors (880086821).

2640260451 is an equidigital number, since it uses as much as digits as its factorization.

2640260451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880086820.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 2640260451 is about 51383.4647625090. The cubic root of 2640260451 is about 1382.1300946754.

The spelling of 2640260451 in words is "two billion, six hundred forty million, two hundred sixty thousand, four hundred fifty-one".