91601347724 has 12 divisors (see below), whose sum is σ = 169731909144. Its totient is φ = 43106516544.

The previous prime is 91601347723. The next prime is 91601347763. The reversal of 91601347724 is 42774310619.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (91601347723) 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 3 ways as a sum of consecutive naturals, for example, 673539254 + ... + 673539389.

It is an arithmetic number, because the mean of its divisors is an integer number (14144325762).

Almost surely, 2^91601347724 is an apocalyptic number.

It is an amenable number.

91601347724 is a deficient number, since it is larger than the sum of its proper divisors (78130561420).

91601347724 is a wasteful number, since it uses less digits than its factorization.

91601347724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347078664 (or 1347078662 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 44.

The spelling of 91601347724 in words is "ninety-one billion, six hundred one million, three hundred forty-seven thousand, seven hundred twenty-four".