172218558350154 has 32 divisors (see below), whose sum is σ = 376462579170816. Its totient is φ = 52286469327360.

The previous prime is 172218558350149. The next prime is 172218558350177. The reversal of 172218558350154 is 451053855812271.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 172218558350094 and 172218558350103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27232532947 + ... + 27232539270.

It is an arithmetic number, because the mean of its divisors is an integer number (11764455599088).

Almost surely, 2^{172218558350154} is an apocalyptic number.

172218558350154 is an abundant number, since it is smaller than the sum of its proper divisors (204244020820662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172218558350154 is a wasteful number, since it uses less digits than its factorization.

172218558350154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54465072270.

The product of its (nonzero) digits is 13440000, while the sum is 57.

The spelling of 172218558350154 in words is "one hundred seventy-two trillion, two hundred eighteen billion, five hundred fifty-eight million, three hundred fifty thousand, one hundred fifty-four".