91161000603 has 6 divisors (see below), whose sum is σ = 131677000884. Its totient is φ = 60774000396.

The previous prime is 91161000589. The next prime is 91161000629. The reversal of 91161000603 is 30600016119.

It is not a de Polignac number, because 91161000603 - 2⁵ = 91161000571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91161000703) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5064500025 + ... + 5064500042.

It is an arithmetic number, because the mean of its divisors is an integer number (21946166814).

Almost surely, 2^91161000603 is an apocalyptic number.

91161000603 is a deficient number, since it is larger than the sum of its proper divisors (40516000281).

91161000603 is a wasteful number, since it uses less digits than its factorization.

91161000603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10129000073 (or 10129000070 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The spelling of 91161000603 in words is "ninety-one billion, one hundred sixty-one million, six hundred three", and thus it is an aban number.