12415489167844 has 81 divisors (see below), whose sum is σ = 25378753592073. Its totient is φ = 5299042609056.

The previous prime is 12415489167817. The next prime is 12415489167863. The reversal of 12415489167844 is 44876198451421.

The square root of 12415489167844 is 3523562.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2930813889444 + 9484675278400 = 1711962^2 + 3079720^2 .

It is a super-3 number, since 3×12415489167844³ (a number of 40 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 19189318329 + ... + 19189318975.

Almost surely, 2^{12415489167844} is an apocalyptic number.

12415489167844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12415489167844 is the 3523562-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12415489167844

12415489167844 is an abundant number, since it is smaller than the sum of its proper divisors (12963264424229).

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

12415489167844 is an frugal number, since it uses more digits than its factorization.

12415489167844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090 (or 1045 counting only the distinct ones).

The product of its digits is 61931520, while the sum is 64.

Multiplying 12415489167844 by its sum of digits (64), we get a square (794591306742016 = 28188496²).

The spelling of 12415489167844 in words is "twelve trillion, four hundred fifteen billion, four hundred eighty-nine million, one hundred sixty-seven thousand, eight hundred forty-four".