19949007056833 has 4 divisors (see below), whose sum is σ = 19950171163780. Its totient is φ = 19947842949888.

The previous prime is 19949007056779. The next prime is 19949007056837. The reversal of 19949007056833 is 33865070094991.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 532399337649 + 19416607719184 = 729657^2 + 4406428^2 .

It is a cyclic number.

It is not a de Polignac number, because 19949007056833 - 2³⁷ = 19811568103361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19949007056837) 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, 582027768 + ... + 582062041.

It is an arithmetic number, because the mean of its divisors is an integer number (4987542790945).

Almost surely, 2^{19949007056833} is an apocalyptic number.

It is an amenable number.

19949007056833 is a deficient number, since it is larger than the sum of its proper divisors (1164106947).

19949007056833 is a wasteful number, since it uses less digits than its factorization.

19949007056833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164106946.

The product of its (nonzero) digits is 44089920, while the sum is 64.

The spelling of 19949007056833 in words is "nineteen trillion, nine hundred forty-nine billion, seven million, fifty-six thousand, eight hundred thirty-three".