28911111111982 has 24 divisors (see below), whose sum is σ = 47731460891400. Its totient is φ = 13025118314880.

The previous prime is 28911111111943. The next prime is 28911111112021.

28911111111982 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (28911111111943) and next prime (28911111112021).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51177357 + ... + 51739192.

It is an arithmetic number, because the mean of its divisors is an integer number (1988810870475).

Almost surely, 2^{28911111111982} is an apocalyptic number.

28911111111982 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28911111111982 is a deficient number, since it is larger than the sum of its proper divisors (18820349779418).

28911111111982 is a wasteful number, since it uses less digits than its factorization.

28911111111982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102916788 (or 102916675 counting only the distinct ones).

The product of its digits is 20736, while the sum is 46.

The spelling of 28911111111982 in words is "twenty-eight trillion, nine hundred eleven billion, one hundred eleven million, one hundred eleven thousand, nine hundred eighty-two".