12105623770 has 8 divisors (see below), whose sum is σ = 21790122804. Its totient is φ = 4842249504.

The previous prime is 12105623723. The next prime is 12105623771. The reversal of 12105623770 is 7732650121.

It can be written as a sum of positive squares in 2 ways, for example, as 11392787169 + 712836601 = 106737^2 + 26699^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12105623770² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12105623771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 605281179 + ... + 605281198.

Almost surely, 2^12105623770 is an apocalyptic number.

12105623770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12105623770 is a deficient number, since it is larger than the sum of its proper divisors (9684499034).

12105623770 is a wasteful number, since it uses less digits than its factorization.

12105623770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210562384.

The product of its (nonzero) digits is 17640, while the sum is 34.

The spelling of 12105623770 in words is "twelve billion, one hundred five million, six hundred twenty-three thousand, seven hundred seventy".