91647349401 has 16 divisors (see below), whose sum is σ = 132393438144. Its totient is φ = 56166910464.

The previous prime is 91647349337. The next prime is 91647349481. The reversal of 91647349401 is 10494374619.

It is not a de Polignac number, because 91647349401 - 2⁶ = 91647349337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91647349481) 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 15 ways as a sum of consecutive naturals, for example, 20893236 + ... + 20897621.

It is an arithmetic number, because the mean of its divisors is an integer number (8274589884).

Almost surely, 2^91647349401 is an apocalyptic number.

It is an amenable number.

91647349401 is a deficient number, since it is larger than the sum of its proper divisors (40746088743).

91647349401 is a wasteful number, since it uses less digits than its factorization.

91647349401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41790920.

The product of its (nonzero) digits is 653184, while the sum is 48.

The spelling of 91647349401 in words is "ninety-one billion, six hundred forty-seven million, three hundred forty-nine thousand, four hundred one".