172042448399 has 8 divisors (see below), whose sum is σ = 173756319360. Its totient is φ = 170329415256.

The previous prime is 172042448377. The next prime is 172042448453. The reversal of 172042448399 is 993844240271.

It is a Cunningham number, because it is equal to 414780²-1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172042448399 - 2²⁴ = 172025671183 is a prime.

It is a super-2 number, since 2×172042448399² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 172042448399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172042448329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207392 + ... + 622170.

It is an arithmetic number, because the mean of its divisors is an integer number (21719539920).

Almost surely, 2^172042448399 is an apocalyptic number.

172042448399 is a deficient number, since it is larger than the sum of its proper divisors (1713870961).

172042448399 is a wasteful number, since it uses less digits than its factorization.

172042448399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418909.

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 172042448399 in words is "one hundred seventy-two billion, forty-two million, four hundred forty-eight thousand, three hundred ninety-nine".