10856678640 has 160 divisors (see below), whose sum is σ = 35589722112. Its totient is φ = 2733312000.

The previous prime is 10856678597. The next prime is 10856678647. The reversal of 10856678640 is 4687665801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10856678647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 287245 + ... + 322835.

Almost surely, 2^10856678640 is an apocalyptic number.

10856678640 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 10856678640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17794861056).

10856678640 is an abundant number, since it is smaller than the sum of its proper divisors (24733043472).

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

10856678640 is a wasteful number, since it uses less digits than its factorization.

10856678640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35679 (or 35673 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 10856678640 in words is "ten billion, eight hundred fifty-six million, six hundred seventy-eight thousand, six hundred forty".