20853003699 has 24 divisors (see below), whose sum is σ = 32888559600. Its totient is φ = 12626922240.

The previous prime is 20853003653. The next prime is 20853003707. The reversal of 20853003699 is 99630035802.

20853003699 is a `hidden beast` number, since 20 + 8 + 530 + 0 + 3 + 6 + 99 = 666.

It is not a de Polignac number, because 20853003699 - 2¹⁶ = 20852938163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20853003629) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18487 + ... + 205055.

It is an arithmetic number, because the mean of its divisors is an integer number (1370356650).

Almost surely, 2^20853003699 is an apocalyptic number.

20853003699 is a deficient number, since it is larger than the sum of its proper divisors (12035555901).

20853003699 is a wasteful number, since it uses less digits than its factorization.

20853003699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187715 (or 187712 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 20853003699 in words is "twenty billion, eight hundred fifty-three million, three thousand, six hundred ninety-nine".