10978889287 has 4 divisors (see below), whose sum is σ = 11046244600. Its totient is φ = 10911533976.

The previous prime is 10978889249. The next prime is 10978889293. The reversal of 10978889287 is 78298887901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10978889287 - 2²⁷ = 10844671559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10978889297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33677412 + ... + 33677737.

It is an arithmetic number, because the mean of its divisors is an integer number (2761561150).

Almost surely, 2^10978889287 is an apocalyptic number.

10978889287 is a deficient number, since it is larger than the sum of its proper divisors (67355313).

10978889287 is an equidigital number, since it uses as much as digits as its factorization.

10978889287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67355312.

The product of its (nonzero) digits is 32514048, while the sum is 67.

The spelling of 10978889287 in words is "ten billion, nine hundred seventy-eight million, eight hundred eighty-nine thousand, two hundred eighty-seven".