91614343680 has 480 divisors, whose sum is σ = 348432948864. Its totient is φ = 22990749696.

The previous prime is 91614343651. The next prime is 91614343687. The reversal of 91614343680 is 8634341619.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (91614343687) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10571029 + ... + 10579691.

Almost surely, 2^91614343680 is an apocalyptic number.

91614343680 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91614343680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174216474432).

91614343680 is an abundant number, since it is smaller than the sum of its proper divisors (256818605184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91614343680 is an equidigital number, since it uses as much as digits as its factorization.

91614343680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8718 (or 8690 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 91614343680 in words is "ninety-one billion, six hundred fourteen million, three hundred forty-three thousand, six hundred eighty".