11972978682 has 32 divisors (see below), whose sum is σ = 27375489024. Its totient is φ = 3419766000.

The previous prime is 11972978681. The next prime is 11972978683. The reversal of 11972978682 is 28687927911.

It is an interprime number because it is at equal distance from previous prime (11972978681) and next prime (11972978683).

It is not an unprimeable number, because it can be changed into a prime (11972978681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93807 + ... + 180957.

It is an arithmetic number, because the mean of its divisors is an integer number (855484032).

Almost surely, 2^11972978682 is an apocalyptic number.

11972978682 is an abundant number, since it is smaller than the sum of its proper divisors (15402510342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11972978682 is a wasteful number, since it uses less digits than its factorization.

11972978682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90434.

The product of its digits is 6096384, while the sum is 60.

The spelling of 11972978682 in words is "eleven billion, nine hundred seventy-two million, nine hundred seventy-eight thousand, six hundred eighty-two".