91490488863 has 8 divisors (see below), whose sum is σ = 122305824768. Its totient is φ = 60834406104.

The previous prime is 91490488861. The next prime is 91490488907. The reversal of 91490488863 is 36888409419.

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

It is not a de Polignac number, because 91490488863 - 2¹ = 91490488861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91490488797 and 91490488806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91490488861) 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, 39811945 + ... + 39814242.

It is an arithmetic number, because the mean of its divisors is an integer number (15288228096).

Almost surely, 2^91490488863 is an apocalyptic number.

91490488863 is a deficient number, since it is larger than the sum of its proper divisors (30815335905).

91490488863 is a wasteful number, since it uses less digits than its factorization.

91490488863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79626573.

The product of its (nonzero) digits is 11943936, while the sum is 60.

The spelling of 91490488863 in words is "ninety-one billion, four hundred ninety million, four hundred eighty-eight thousand, eight hundred sixty-three".