19767750013 has 4 divisors (see below), whose sum is σ = 21564818208. Its totient is φ = 17970681820.

The previous prime is 19767749977. The next prime is 19767750053. The reversal of 19767750013 is 31005776791.

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 a cyclic number.

It is not a de Polignac number, because 19767750013 - 2²⁵ = 19734195581 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 (19767750053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 898534081 + ... + 898534102.

It is an arithmetic number, because the mean of its divisors is an integer number (5391204552).

Almost surely, 2^19767750013 is an apocalyptic number.

It is an amenable number.

19767750013 is a deficient number, since it is larger than the sum of its proper divisors (1797068195).

19767750013 is a wasteful number, since it uses less digits than its factorization.

19767750013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1797068194.

The product of its (nonzero) digits is 277830, while the sum is 46.

The spelling of 19767750013 in words is "nineteen billion, seven hundred sixty-seven million, seven hundred fifty thousand, thirteen".