106661705472 has 144 divisors (see below), whose sum is σ = 360477223680. Its totient is φ = 30474759168.

The previous prime is 106661705453. The next prime is 106661705537. The reversal of 106661705472 is 274507166601.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×106661705472² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1053858 + ... + 1150625.

Almost surely, 2^106661705472 is an apocalyptic number.

106661705472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

106661705472 is an abundant number, since it is smaller than the sum of its proper divisors (253815518208).

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

106661705472 is an equidigital number, since it uses as much as digits as its factorization.

106661705472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2204515 (or 2204495 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 106661705472 in words is "one hundred six billion, six hundred sixty-one million, seven hundred five thousand, four hundred seventy-two".