91916001447 has 32 divisors (see below), whose sum is σ = 130922254848. Its totient is φ = 57221531136.

The previous prime is 91916001433. The next prime is 91916001467. The reversal of 91916001447 is 74410061919.

It is not a de Polignac number, because 91916001447 - 2¹⁶ = 91915935911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91916001399 and 91916001408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91916001467) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7046043 + ... + 7059075.

It is an arithmetic number, because the mean of its divisors is an integer number (4091320464).

Almost surely, 2^91916001447 is an apocalyptic number.

91916001447 is a deficient number, since it is larger than the sum of its proper divisors (39006253401).

91916001447 is a wasteful number, since it uses less digits than its factorization.

91916001447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15479.

The product of its (nonzero) digits is 54432, while the sum is 42.

The spelling of 91916001447 in words is "ninety-one billion, nine hundred sixteen million, one thousand, four hundred forty-seven".