91602478789 has 8 divisors (see below), whose sum is σ = 92104385472. Its totient is φ = 91101820320.

The previous prime is 91602478733. The next prime is 91602478969. The reversal of 91602478789 is 98787420619.

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 91602478789 - 2⁹ = 91602478277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91602478589) 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, 164689 + ... + 458614.

It is an arithmetic number, because the mean of its divisors is an integer number (11513048184).

Almost surely, 2^91602478789 is an apocalyptic number.

It is an amenable number.

91602478789 is a deficient number, since it is larger than the sum of its proper divisors (501906683).

91602478789 is a wasteful number, since it uses less digits than its factorization.

91602478789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624107.

The product of its (nonzero) digits is 12192768, while the sum is 61.

The spelling of 91602478789 in words is "ninety-one billion, six hundred two million, four hundred seventy-eight thousand, seven hundred eighty-nine".