991000010010 has 32 divisors (see below), whose sum is σ = 2378976344640. Its totient is φ = 264202633728.

The previous prime is 991000010003. The next prime is 991000010027. The reversal of 991000010010 is 10010000199.

991000010010 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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, 3876292 + ... + 4124031.

It is an arithmetic number, because the mean of its divisors is an integer number (74343010770).

Almost surely, 2^991000010010 is an apocalyptic number.

991000010010 is an abundant number, since it is smaller than the sum of its proper divisors (1387976334630).

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

991000010010 is a wasteful number, since it uses less digits than its factorization.

991000010010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8004462.

The product of its (nonzero) digits is 81, while the sum is 21.

The spelling of 991000010010 in words is "nine hundred ninety-one billion, ten thousand, ten".