101440512013 has 4 divisors (see below), whose sum is σ = 101441953180. Its totient is φ = 101439070848.

The previous prime is 101440511999. The next prime is 101440512077. The reversal of 101440512013 is 310215044101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310215044101 = 113 ⋅2745265877.

It can be written as a sum of positive squares in 2 ways, for example, as 55388210409 + 46052301604 = 235347^2 + 214598^2 .

It is a cyclic number.

It is not a de Polignac number, because 101440512013 - 2²⁹ = 100903641101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101440512113) 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, 609270 + ... + 757687.

It is an arithmetic number, because the mean of its divisors is an integer number (25360488295).

Almost surely, 2^101440512013 is an apocalyptic number.

It is an amenable number.

101440512013 is a deficient number, since it is larger than the sum of its proper divisors (1441167).

101440512013 is an equidigital number, since it uses as much as digits as its factorization.

101440512013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441166.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 101440512013 its reverse (310215044101), we get a palindrome (411655556114).

The spelling of 101440512013 in words is "one hundred one billion, four hundred forty million, five hundred twelve thousand, thirteen".