12499776970 has 16 divisors (see below), whose sum is σ = 23107696488. Its totient is φ = 4864777920.

The previous prime is 12499776959. The next prime is 12499776973. The reversal of 12499776970 is 7967799421.

It can be written as a sum of positive squares in 4 ways, for example, as 12440502369 + 59274601 = 111537^2 + 7699^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12499776899 and 12499776908.

It is not an unprimeable number, because it can be changed into a prime (12499776973) 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, 16891221 + ... + 16891960.

Almost surely, 2^12499776970 is an apocalyptic number.

12499776970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12499776970 is a deficient number, since it is larger than the sum of its proper divisors (10607919518).

12499776970 is a wasteful number, since it uses less digits than its factorization.

12499776970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33783225.

The product of its (nonzero) digits is 12002256, while the sum is 61.

The spelling of 12499776970 in words is "twelve billion, four hundred ninety-nine million, seven hundred seventy-six thousand, nine hundred seventy".