91516407901 has 8 divisors (see below), whose sum is σ = 92108044800. Its totient is φ = 90926441040.

The previous prime is 91516407889. The next prime is 91516407929. The reversal of 91516407901 is 10970461519.

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 91516407901 - 2¹¹ = 91516405853 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 (91516407991) 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, 307465 + ... + 526846.

It is an arithmetic number, because the mean of its divisors is an integer number (11513505600).

Almost surely, 2^91516407901 is an apocalyptic number.

It is an amenable number.

91516407901 is a deficient number, since it is larger than the sum of its proper divisors (591636899).

91516407901 is a wasteful number, since it uses less digits than its factorization.

91516407901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835019.

The product of its (nonzero) digits is 68040, while the sum is 43.

The spelling of 91516407901 in words is "ninety-one billion, five hundred sixteen million, four hundred seven thousand, nine hundred one".