91614805747 has 16 divisors (see below), whose sum is σ = 95743200960. Its totient is φ = 87582684672.

The previous prime is 91614805727. The next prime is 91614805769. The reversal of 91614805747 is 74750841619.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 91614805747 - 2¹⁹ = 91614281459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91614805694 and 91614805703.

It is not an unprimeable number, because it can be changed into a prime (91614805727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 645879 + ... + 774847.

It is an arithmetic number, because the mean of its divisors is an integer number (5983950060).

Almost surely, 2^91614805747 is an apocalyptic number.

91614805747 is a deficient number, since it is larger than the sum of its proper divisors (4128395213).

91614805747 is a wasteful number, since it uses less digits than its factorization.

91614805747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129342.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 91614805747 in words is "ninety-one billion, six hundred fourteen million, eight hundred five thousand, seven hundred forty-seven".