29911812712 has 8 divisors (see below), whose sum is σ = 56084648850. Its totient is φ = 14955906352.

The previous prime is 29911812703. The next prime is 29911812713. The reversal of 29911812712 is 21721811992.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 26887472676 + 3024340036 = 163974^2 + 54994^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (29911812713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1869488287 + ... + 1869488302.

Almost surely, 2^29911812712 is an apocalyptic number.

It is an amenable number.

29911812712 is a deficient number, since it is larger than the sum of its proper divisors (26172836138).

29911812712 is a wasteful number, since it uses less digits than its factorization.

29911812712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3738976595 (or 3738976591 counting only the distinct ones).

The product of its digits is 36288, while the sum is 43.

The spelling of 29911812712 in words is "twenty-nine billion, nine hundred eleven million, eight hundred twelve thousand, seven hundred twelve".