12788649969 has 8 divisors (see below), whose sum is σ = 17052136800. Its totient is φ = 8525464896.

The previous prime is 12788649967. The next prime is 12788649977. The reversal of 12788649969 is 96994688721.

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

It is not a de Polignac number, because 12788649969 - 2¹ = 12788649967 is a prime.

It is a super-2 number, since 2×12788649969² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12788649967) 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, 56334 + ... + 169560.

It is an arithmetic number, because the mean of its divisors is an integer number (2131517100).

Almost surely, 2^12788649969 is an apocalyptic number.

It is an amenable number.

12788649969 is a deficient number, since it is larger than the sum of its proper divisors (4263486831).

12788649969 is a wasteful number, since it uses less digits than its factorization.

12788649969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150879.

The product of its digits is 94058496, while the sum is 69.

The spelling of 12788649969 in words is "twelve billion, seven hundred eighty-eight million, six hundred forty-nine thousand, nine hundred sixty-nine".