91161000602 has 16 divisors (see below), whose sum is σ = 156280015872. Its totient is φ = 39067996560.

The previous prime is 91161000589. The next prime is 91161000629. The reversal of 91161000602 is 20600016119.

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, 810008 + ... + 915660.

It is an arithmetic number, because the mean of its divisors is an integer number (9767500992).

Almost surely, 2^91161000602 is an apocalyptic number.

91161000602 is the 246524-th pentagonal number.

91161000602 is a deficient number, since it is larger than the sum of its proper divisors (65119015270).

91161000602 is a wasteful number, since it uses less digits than its factorization.

91161000602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167293.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 91161000602 in words is "ninety-one billion, one hundred sixty-one million, six hundred two", and thus it is an aban number.