2640010403 has 4 divisors (see below), whose sum is σ = 2754793488. Its totient is φ = 2525227320.

The previous prime is 2640010391. The next prime is 2640010409. The reversal of 2640010403 is 3040100462.

It is a happy number.

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 2640010403 - 2¹⁸ = 2639748259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2640010409) 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, 57391508 + ... + 57391553.

It is an arithmetic number, because the mean of its divisors is an integer number (688698372).

Almost surely, 2^2640010403 is an apocalyptic number.

2640010403 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2640010403 is a deficient number, since it is larger than the sum of its proper divisors (114783085).

2640010403 is a wasteful number, since it uses less digits than its factorization.

2640010403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114783084.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2640010403 is about 51381.0315486172. The cubic root of 2640010403 is about 1382.0864613820.

Adding to 2640010403 its reverse (3040100462), we get a palindrome (5680110865).

The spelling of 2640010403 in words is "two billion, six hundred forty million, ten thousand, four hundred three".