12778963970 has 32 divisors (see below), whose sum is σ = 23817596400. Its totient is φ = 4930702336.

The previous prime is 12778963949. The next prime is 12778964021. The reversal of 12778963970 is 7936987721.

It can be written as a sum of positive squares in 8 ways, for example, as 8369871169 + 4409092801 = 91487^2 + 66401^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298046 + ... + 338214.

Almost surely, 2^12778963970 is an apocalyptic number.

12778963970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12778963970 is a deficient number, since it is larger than the sum of its proper divisors (11038632430).

12778963970 is a wasteful number, since it uses less digits than its factorization.

12778963970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41302.

The product of its (nonzero) digits is 8001504, while the sum is 59.

The spelling of 12778963970 in words is "twelve billion, seven hundred seventy-eight million, nine hundred sixty-three thousand, nine hundred seventy".