172218701641 has 8 divisors (see below), whose sum is σ = 196924924224. Its totient is φ = 147538366800.

The previous prime is 172218701639. The next prime is 172218701657. The reversal of 172218701641 is 146107812271.

It is a happy number.

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 172218701641 - 2¹ = 172218701639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172218701594 and 172218701603.

It is not an unprimeable number, because it can be changed into a prime (172218701041) 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, 6457675 + ... + 6484288.

It is an arithmetic number, because the mean of its divisors is an integer number (24615615528).

Almost surely, 2^172218701641 is an apocalyptic number.

It is an amenable number.

172218701641 is a deficient number, since it is larger than the sum of its proper divisors (24706222583).

172218701641 is a wasteful number, since it uses less digits than its factorization.

172218701641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12943871.

The product of its (nonzero) digits is 37632, while the sum is 40.

The spelling of 172218701641 in words is "one hundred seventy-two billion, two hundred eighteen million, seven hundred one thousand, six hundred forty-one".