19852787051 has 32 divisors (see below), whose sum is σ = 22548096000. Its totient is φ = 17367229440.

The previous prime is 19852787041. The next prime is 19852787057. The reversal of 19852787051 is 15078725891.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19852787051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19852786984 and 19852787002.

It is not an unprimeable number, because it can be changed into a prime (19852787057) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4690106 + ... + 4694336.

It is an arithmetic number, because the mean of its divisors is an integer number (704628000).

Almost surely, 2^19852787051 is an apocalyptic number.

19852787051 is a deficient number, since it is larger than the sum of its proper divisors (2695308949).

19852787051 is a wasteful number, since it uses less digits than its factorization.

19852787051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4539.

The product of its (nonzero) digits is 1411200, while the sum is 53.

The spelling of 19852787051 in words is "nineteen billion, eight hundred fifty-two million, seven hundred eighty-seven thousand, fifty-one".