2640241451 has 4 divisors (see below), whose sum is σ = 2640463392. Its totient is φ = 2640019512.

The previous prime is 2640241427. The next prime is 2640241489. The reversal of 2640241451 is 1541420462.

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 2640241451 - 2²² = 2636047147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2640241421) 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, 92051 + ... + 117276.

It is an arithmetic number, because the mean of its divisors is an integer number (660115848).

Almost surely, 2^2640241451 is an apocalyptic number.

2640241451 is a deficient number, since it is larger than the sum of its proper divisors (221941).

2640241451 is a wasteful number, since it uses less digits than its factorization.

2640241451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221940.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 2640241451 is about 51383.2798777968. The cubic root of 2640241451 is about 1382.1267792784.

The spelling of 2640241451 in words is "two billion, six hundred forty million, two hundred forty-one thousand, four hundred fifty-one".