91494172901 has 8 divisors (see below), whose sum is σ = 91808380800. Its totient is φ = 91180485760.

The previous prime is 91494172879. The next prime is 91494172927. The reversal of 91494172901 is 10927149419.

It is a happy number.

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 91494172901 - 2⁶ = 91494172837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91494172961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223445 + ... + 482613.

It is an arithmetic number, because the mean of its divisors is an integer number (11476047600).

Almost surely, 2^91494172901 is an apocalyptic number.

It is an amenable number.

91494172901 is a deficient number, since it is larger than the sum of its proper divisors (314207899).

91494172901 is a wasteful number, since it uses less digits than its factorization.

91494172901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260379.

The product of its (nonzero) digits is 163296, while the sum is 47.

The spelling of 91494172901 in words is "ninety-one billion, four hundred ninety-four million, one hundred seventy-two thousand, nine hundred one".