10261278510 has 128 divisors (see below), whose sum is σ = 30648499200. Its totient is φ = 2145346560.

The previous prime is 10261278497. The next prime is 10261278583. The reversal of 10261278510 is 1587216201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 71370 + ... + 160050.

It is an arithmetic number, because the mean of its divisors is an integer number (239441400).

Almost surely, 2^10261278510 is an apocalyptic number.

10261278510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10261278510, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15324249600).

10261278510 is an abundant number, since it is smaller than the sum of its proper divisors (20387220690).

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

10261278510 is a wasteful number, since it uses less digits than its factorization.

10261278510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88746.

The product of its (nonzero) digits is 6720, while the sum is 33.

The spelling of 10261278510 in words is "ten billion, two hundred sixty-one million, two hundred seventy-eight thousand, five hundred ten".