91018943010 has 48 divisors (see below), whose sum is σ = 236675327616. Its totient is φ = 24269043744.

The previous prime is 91018943009. The next prime is 91018943033. The reversal of 91018943010 is 1034981019.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 846297 + ... + 947763.

It is an arithmetic number, because the mean of its divisors is an integer number (4930735992).

Almost surely, 2^91018943010 is an apocalyptic number.

91018943010 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

91018943010 is an abundant number, since it is smaller than the sum of its proper divisors (145656384606).

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

91018943010 is a wasteful number, since it uses less digits than its factorization.

91018943010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111447 (or 111444 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The spelling of 91018943010 in words is "ninety-one billion, eighteen million, nine hundred forty-three thousand, ten".