12696478000 has 40 divisors (see below), whose sum is σ = 30700088640. Its totient is φ = 5078590400.

The previous prime is 12696477991. The next prime is 12696478001. The reversal of 12696478000 is 87469621.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×12696478000² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12696478001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3172120 + ... + 3176119.

It is an arithmetic number, because the mean of its divisors is an integer number (767502216).

Almost surely, 2^12696478000 is an apocalyptic number.

12696478000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12696478000 is an abundant number, since it is smaller than the sum of its proper divisors (18003610640).

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

12696478000 is an equidigital number, since it uses as much as digits as its factorization.

12696478000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6348262 (or 6348246 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 12696478000 in words is "twelve billion, six hundred ninety-six million, four hundred seventy-eight thousand".