10087791844 has 27 divisors (see below), whose sum is σ = 19121016873. Its totient is φ = 4654698672.

The previous prime is 10087791797. The next prime is 10087791859. The reversal of 10087791844 is 44819778001.

The square root of 10087791844 is 100438.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1492276900 + 8595514944 = 38630^2 + 92712^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2609457 + ... + 2613319.

Almost surely, 2^10087791844 is an apocalyptic number.

10087791844 is the 100438-th square number.

It is an amenable number.

10087791844 is a deficient number, since it is larger than the sum of its proper divisors (9033225029).

10087791844 is an frugal number, since it uses more digits than its factorization.

10087791844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7756 (or 3878 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 49.

Multiplying 10087791844 by its sum of digits (49), we get a square (494301800356 = 703066²).

It can be divided in two parts, 100877 and 91844, that added together give a square (192721 = 439²).

The spelling of 10087791844 in words is "ten billion, eighty-seven million, seven hundred ninety-one thousand, eight hundred forty-four".