91040603854 has 8 divisors (see below), whose sum is σ = 136563904008. Its totient is φ = 45519302520.

The previous prime is 91040603831. The next prime is 91040603869. The reversal of 91040603854 is 45830604019.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380112 + ... + 571459.

It is an arithmetic number, because the mean of its divisors is an integer number (17070488001).

Almost surely, 2^91040603854 is an apocalyptic number.

91040603854 is a deficient number, since it is larger than the sum of its proper divisors (45523300154).

91040603854 is a wasteful number, since it uses less digits than its factorization.

91040603854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999410.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 91040603854 in words is "ninety-one billion, forty million, six hundred three thousand, eight hundred fifty-four".