10687298778 has 96 divisors (see below), whose sum is σ = 26440307712. Its totient is φ = 3090700800.

The previous prime is 10687298753. The next prime is 10687298803. The reversal of 10687298778 is 87789278601.

It is an interprime number because it is at equal distance from previous prime (10687298753) and next prime (10687298803).

It is a super-2 number, since 2×10687298778² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3940843 + ... + 3943553.

It is an arithmetic number, because the mean of its divisors is an integer number (275419872).

Almost surely, 2^10687298778 is an apocalyptic number.

10687298778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10687298778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13220153856).

10687298778 is an abundant number, since it is smaller than the sum of its proper divisors (15753008934).

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

10687298778 is a wasteful number, since it uses less digits than its factorization.

10687298778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3740 (or 3737 counting only the distinct ones).

The product of its (nonzero) digits is 18966528, while the sum is 63.

The spelling of 10687298778 in words is "ten billion, six hundred eighty-seven million, two hundred ninety-eight thousand, seven hundred seventy-eight".