10202778872 has 64 divisors (see below), whose sum is σ = 22623874560. Its totient is φ = 4252464000.

The previous prime is 10202778853. The next prime is 10202778889. The reversal of 10202778872 is 27887720201.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143213 + ... + 202275.

It is an arithmetic number, because the mean of its divisors is an integer number (353498040).

Almost surely, 2^10202778872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10202778872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11311937280).

10202778872 is an abundant number, since it is smaller than the sum of its proper divisors (12421095688).

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

10202778872 is a wasteful number, since it uses less digits than its factorization.

10202778872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59244 (or 59240 counting only the distinct ones).

The product of its (nonzero) digits is 175616, while the sum is 44.

The spelling of 10202778872 in words is "ten billion, two hundred two million, seven hundred seventy-eight thousand, eight hundred seventy-two".