199970813853 has 32 divisors (see below), whose sum is σ = 312607123200. Its totient is φ = 126084803328.

The previous prime is 199970813839. The next prime is 199970813881. The reversal of 199970813853 is 358318079991.

199970813853 is a `hidden beast` number, since 1 + 99 + 97 + 0 + 81 + 385 + 3 = 666.

It is not a de Polignac number, because 199970813853 - 2⁵ = 199970813821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199970813353) 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, 1753800 + ... + 1864337.

It is an arithmetic number, because the mean of its divisors is an integer number (9768972600).

Almost surely, 2^199970813853 is an apocalyptic number.

It is an amenable number.

199970813853 is a deficient number, since it is larger than the sum of its proper divisors (112636309347).

199970813853 is a wasteful number, since it uses less digits than its factorization.

199970813853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3618258 (or 3618252 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 63.

It can be divided in two parts, 1999708 and 13853, that added together give a square (2013561 = 1419²).

The spelling of 199970813853 in words is "one hundred ninety-nine billion, nine hundred seventy million, eight hundred thirteen thousand, eight hundred fifty-three".