91000910148 has 24 divisors (see below), whose sum is σ = 217273492128. Its totient is φ = 29628203136.

The previous prime is 91000910131. The next prime is 91000910159. The reversal of 91000910148 is 84101900019.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88178661 + ... + 88179692.

It is an arithmetic number, because the mean of its divisors is an integer number (9053062172).

Almost surely, 2^91000910148 is an apocalyptic number.

It is an amenable number.

91000910148 is an abundant number, since it is smaller than the sum of its proper divisors (126272581980).

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

91000910148 is a wasteful number, since it uses less digits than its factorization.

91000910148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176358403 (or 176358401 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 33.

The spelling of 91000910148 in words is "ninety-one billion, nine hundred ten thousand, one hundred forty-eight".