12735732378 has 16 divisors (see below), whose sum is σ = 25889030496. Its totient is φ = 4175649840.

The previous prime is 12735732367. The next prime is 12735732409. The reversal of 12735732378 is 87323753721.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17398176 + ... + 17398907.

It is an arithmetic number, because the mean of its divisors is an integer number (1618064406).

Almost surely, 2^12735732378 is an apocalyptic number.

12735732378 is an abundant number, since it is smaller than the sum of its proper divisors (13153298118).

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

12735732378 is a wasteful number, since it uses less digits than its factorization.

12735732378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34797149.

The product of its digits is 1481760, while the sum is 48.

The spelling of 12735732378 in words is "twelve billion, seven hundred thirty-five million, seven hundred thirty-two thousand, three hundred seventy-eight".