2172170219604 has 192 divisors, whose sum is σ = 6529982054400. Its totient is φ = 545405644800.

The previous prime is 2172170219563. The next prime is 2172170219627. The reversal of 2172170219604 is 4069120712712.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26569462 + ... + 26651090.

It is an arithmetic number, because the mean of its divisors is an integer number (34010323200).

Almost surely, 2^{2172170219604} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2172170219604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3264991027200).

2172170219604 is an abundant number, since it is smaller than the sum of its proper divisors (4357811834796).

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

2172170219604 is a wasteful number, since it uses less digits than its factorization.

2172170219604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82614 (or 82612 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The spelling of 2172170219604 in words is "two trillion, one hundred seventy-two billion, one hundred seventy million, two hundred nineteen thousand, six hundred four".