12969157880 has 128 divisors (see below), whose sum is σ = 35371054080. Its totient is φ = 4177889280.

The previous prime is 12969157871. The next prime is 12969157909. The reversal of 12969157880 is 8875196921.

It is a super-2 number, since 2×12969157880² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3287189 + ... + 3291131.

It is an arithmetic number, because the mean of its divisors is an integer number (276336360).

Almost surely, 2^12969157880 is an apocalyptic number.

12969157880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12969157880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17685527040).

12969157880 is an abundant number, since it is smaller than the sum of its proper divisors (22401896200).

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

12969157880 is a wasteful number, since it uses less digits than its factorization.

12969157880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4669 (or 4665 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 56.

The spelling of 12969157880 in words is "twelve billion, nine hundred sixty-nine million, one hundred fifty-seven thousand, eight hundred eighty".