91612645005409 has 8 divisors (see below), whose sum is σ = 100857957805440. Its totient is φ = 82520147293200.

The previous prime is 91612645005373. The next prime is 91612645005433. The reversal of 91612645005409 is 90450054621619.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91612645005409 - 2²⁵ = 91612611450977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91612645005499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38203770697 + ... + 38203773094.

It is an arithmetic number, because the mean of its divisors is an integer number (12607244725680).

Almost surely, 2^{91612645005409} is an apocalyptic number.

It is an amenable number.

91612645005409 is a deficient number, since it is larger than the sum of its proper divisors (9245312800031).

91612645005409 is a wasteful number, since it uses less digits than its factorization.

91612645005409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76407543911.

The product of its (nonzero) digits is 2332800, while the sum is 52.

The spelling of 91612645005409 in words is "ninety-one trillion, six hundred twelve billion, six hundred forty-five million, five thousand, four hundred nine".