19630633685 has 16 divisors (see below), whose sum is σ = 25378219776. Its totient is φ = 14491096128.

The previous prime is 19630633681. The next prime is 19630633721. The reversal of 19630633685 is 58633603691.

It is a cyclic number.

It is not a de Polignac number, because 19630633685 - 2² = 19630633681 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19630633681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125282 + ... + 234428.

It is an arithmetic number, because the mean of its divisors is an integer number (1586138736).

Almost surely, 2^19630633685 is an apocalyptic number.

It is an amenable number.

19630633685 is a deficient number, since it is larger than the sum of its proper divisors (5747586091).

19630633685 is a wasteful number, since it uses less digits than its factorization.

19630633685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111932.

The product of its (nonzero) digits is 2099520, while the sum is 50.

The spelling of 19630633685 in words is "nineteen billion, six hundred thirty million, six hundred thirty-three thousand, six hundred eighty-five".