12720001289760 has 168 divisors, whose sum is σ = 45055893870540. Its totient is φ = 3392000312832.

The previous prime is 12720001289747. The next prime is 12720001289819. The reversal of 12720001289760 is 6798210002721.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12546302389776 + 173698899984 = 3542076^2 + 416772^2 .

It is a super-2 number, since 2×12720001289760² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 54410115 + ... + 54643394.

Almost surely, 2^{12720001289760} is an apocalyptic number.

12720001289760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12720001289760 is an abundant number, since it is smaller than the sum of its proper divisors (32335892580780).

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

12720001289760 is an equidigital number, since it uses as much as digits as its factorization.

12720001289760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109053542 (or 109053519 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The spelling of 12720001289760 in words is "twelve trillion, seven hundred twenty billion, one million, two hundred eighty-nine thousand, seven hundred sixty".