408172208851 has 8 divisors (see below), whose sum is σ = 446185660608. Its totient is φ = 370309905000.

The previous prime is 408172208839. The next prime is 408172208867. The reversal of 408172208851 is 158802271804.

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 408172208851 - 2²⁵ = 408138654419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (408172208831) 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, 37781325 + ... + 37792126.

It is an arithmetic number, because the mean of its divisors is an integer number (55773207576).

Almost surely, 2^408172208851 is an apocalyptic number.

408172208851 is a deficient number, since it is larger than the sum of its proper divisors (38013451757).

408172208851 is a wasteful number, since it uses less digits than its factorization.

408172208851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75573953.

The product of its (nonzero) digits is 286720, while the sum is 46.

The spelling of 408172208851 in words is "four hundred eight billion, one hundred seventy-two million, two hundred eight thousand, eight hundred fifty-one".