12899507776 has 21 divisors (see below), whose sum is σ = 25599263889. Its totient is φ = 6449299584.

The previous prime is 12899507723. The next prime is 12899507821. The reversal of 12899507776 is 67770599821.

The square root of 12899507776 is 113576.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 12769000000 + 130507776 = 113000^2 + 11424^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 901510 + ... + 915706.

Almost surely, 2^12899507776 is an apocalyptic number.

12899507776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

12899507776 is the 113576-th square number.

It is an amenable number.

12899507776 is a deficient number, since it is larger than the sum of its proper divisors (12699756113).

12899507776 is an frugal number, since it uses more digits than its factorization.

12899507776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28406 (or 14199 counting only the distinct ones).

The product of its (nonzero) digits is 13335840, while the sum is 61.

The spelling of 12899507776 in words is "twelve billion, eight hundred ninety-nine million, five hundred seven thousand, seven hundred seventy-six".