10402540013 has 4 divisors (see below), whose sum is σ = 10478471100. Its totient is φ = 10326608928.

The previous prime is 10402540009. The next prime is 10402540019. The reversal of 10402540013 is 31004520401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31004520401 = 151939 ⋅204059.

It can be written as a sum of positive squares in 2 ways, for example, as 2950879684 + 7451660329 = 54322^2 + 86323^2 .

It is a cyclic number.

It is not a de Polignac number, because 10402540013 - 2² = 10402540009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10402540019) 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, 37965338 + ... + 37965611.

It is an arithmetic number, because the mean of its divisors is an integer number (2619617775).

Almost surely, 2^10402540013 is an apocalyptic number.

It is an amenable number.

10402540013 is a deficient number, since it is larger than the sum of its proper divisors (75931087).

10402540013 is an equidigital number, since it uses as much as digits as its factorization.

10402540013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75931086.

The product of its (nonzero) digits is 480, while the sum is 20.

The spelling of 10402540013 in words is "ten billion, four hundred two million, five hundred forty thousand, thirteen".