91103316479 has 4 divisors (see below), whose sum is σ = 104118075984. Its totient is φ = 78088556976.

The previous prime is 91103316443. The next prime is 91103316481. The reversal of 91103316479 is 97461330119.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91103316479 - 2¹⁶ = 91103250943 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 (91103316419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6507379742 + ... + 6507379755.

It is an arithmetic number, because the mean of its divisors is an integer number (26029518996).

Almost surely, 2^91103316479 is an apocalyptic number.

91103316479 is a deficient number, since it is larger than the sum of its proper divisors (13014759505).

91103316479 is a wasteful number, since it uses less digits than its factorization.

91103316479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13014759504.

The product of its (nonzero) digits is 122472, while the sum is 44.

The spelling of 91103316479 in words is "ninety-one billion, one hundred three million, three hundred sixteen thousand, four hundred seventy-nine".