199273649464 has 16 divisors (see below), whose sum is σ = 373882164120. Its totient is φ = 99571739040.

The previous prime is 199273649429. The next prime is 199273649489. The reversal of 199273649464 is 464946372991.

It is a super-2 number, since 2×199273649464² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 199273649396 and 199273649405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8122699 + ... + 8147194.

Almost surely, 2^199273649464 is an apocalyptic number.

It is an amenable number.

199273649464 is a deficient number, since it is larger than the sum of its proper divisors (174608514656).

199273649464 is a wasteful number, since it uses less digits than its factorization.

199273649464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16271430 (or 16271426 counting only the distinct ones).

The product of its digits is 70543872, while the sum is 64.

The spelling of 199273649464 in words is "one hundred ninety-nine billion, two hundred seventy-three million, six hundred forty-nine thousand, four hundred sixty-four".