10889878140 has 120 divisors (see below), whose sum is σ = 34956638640. Its totient is φ = 2836415232.

The previous prime is 10889878099. The next prime is 10889878169. The reversal of 10889878140 is 4187898801.

It is a happy number.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8505 + ... + 147824.

It is an arithmetic number, because the mean of its divisors is an integer number (291305322).

Almost surely, 2^10889878140 is an apocalyptic number.

10889878140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10889878140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17478319320).

10889878140 is an abundant number, since it is smaller than the sum of its proper divisors (24066760500).

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

10889878140 is a wasteful number, since it uses less digits than its factorization.

10889878140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156393 (or 156382 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 54.

The spelling of 10889878140 in words is "ten billion, eight hundred eighty-nine million, eight hundred seventy-eight thousand, one hundred forty".