10857719987913 has 4 divisors (see below), whose sum is σ = 14476959983888. Its totient is φ = 7238479991940.

The previous prime is 10857719987911. The next prime is 10857719987923. The reversal of 10857719987913 is 31978991775801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 10857719987913 - 2¹ = 10857719987911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10857719987911) 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, 1809619997983 + ... + 1809619997988.

It is an arithmetic number, because the mean of its divisors is an integer number (3619239995972).

Almost surely, 2^{10857719987913} is an apocalyptic number.

It is an amenable number.

10857719987913 is a deficient number, since it is larger than the sum of its proper divisors (3619239995975).

10857719987913 is an equidigital number, since it uses as much as digits as its factorization.

10857719987913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3619239995974.

The product of its (nonzero) digits is 240045120, while the sum is 75.

The spelling of 10857719987913 in words is "ten trillion, eight hundred fifty-seven billion, seven hundred nineteen million, nine hundred eighty-seven thousand, nine hundred thirteen".