91671806001 has 8 divisors (see below), whose sum is σ = 124535283840. Its totient is φ = 59961432752.

The previous prime is 91671805997. The next prime is 91671806021. The reversal of 91671806001 is 10060817619.

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

It is a cyclic number.

It is not a de Polignac number, because 91671806001 - 2² = 91671805997 is a prime.

It is a super-2 number, since 2×91671806001² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (91671806021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288275961 + ... + 288276278.

It is an arithmetic number, because the mean of its divisors is an integer number (15566910480).

Almost surely, 2^91671806001 is an apocalyptic number.

It is an amenable number.

91671806001 is a deficient number, since it is larger than the sum of its proper divisors (32863477839).

91671806001 is a wasteful number, since it uses less digits than its factorization.

91671806001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576552295.

The product of its (nonzero) digits is 18144, while the sum is 39.

The spelling of 91671806001 in words is "ninety-one billion, six hundred seventy-one million, eight hundred six thousand, one".