172369680844 has 6 divisors (see below), whose sum is σ = 301646941484. Its totient is φ = 86184840420.

The previous prime is 172369680823. The next prime is 172369680863. The reversal of 172369680844 is 448086963271.

It is a happy number.

It is a super-2 number, since 2×172369680844² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21546210102 + ... + 21546210109.

Almost surely, 2^172369680844 is an apocalyptic number.

It is an amenable number.

172369680844 is a deficient number, since it is larger than the sum of its proper divisors (129277260640).

172369680844 is a wasteful number, since it uses less digits than its factorization.

172369680844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43092420215 (or 43092420213 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 58.

The spelling of 172369680844 in words is "one hundred seventy-two billion, three hundred sixty-nine million, six hundred eighty thousand, eight hundred forty-four".