981249949612 has 24 divisors (see below), whose sum is σ = 1756540104704. Its totient is φ = 479496668112.

The previous prime is 981249949609. The next prime is 981249949613. The reversal of 981249949612 is 216949942189.

It is a super-2 number, since 2×981249949612² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (981249949613) 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, 14380848 + ... + 14448919.

Almost surely, 2^981249949612 is an apocalyptic number.

It is an amenable number.

981249949612 is a deficient number, since it is larger than the sum of its proper divisors (775290155092).

981249949612 is a wasteful number, since it uses less digits than its factorization.

981249949612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28829965 (or 28829963 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 64.

The spelling of 981249949612 in words is "nine hundred eighty-one billion, two hundred forty-nine million, nine hundred forty-nine thousand, six hundred twelve".