662172102144 has 400 divisors, whose sum is σ = 2301425029728. Its totient is φ = 185618055168.

The previous prime is 662172102139. The next prime is 662172102167. The reversal of 662172102144 is 441201271266.

662172102144 is a `hidden beast` number, since 6 + 621 + 7 + 2 + 1 + 0 + 21 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 662172102099 and 662172102108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15364594 + ... + 15407630.

Almost surely, 2^662172102144 is an apocalyptic number.

662172102144 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 662172102144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1150712514864).

662172102144 is an abundant number, since it is smaller than the sum of its proper divisors (1639252927584).

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

662172102144 is an equidigital number, since it uses as much as digits as its factorization.

662172102144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43127 (or 43102 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 662172102144 in words is "six hundred sixty-two billion, one hundred seventy-two million, one hundred two thousand, one hundred forty-four".