91448285607 has 192 divisors, whose sum is σ = 166568263680. Its totient is φ = 49380710400.

The previous prime is 91448285587. The next prime is 91448285639. The reversal of 91448285607 is 70658284419.

It is a happy number.

91448285607 is a `hidden beast` number, since 9 + 1 + 4 + 4 + 8 + 28 + 5 + 607 = 666.

It is not a de Polignac number, because 91448285607 - 2¹⁹ = 91447761319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91448284607) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 505239057 + ... + 505239237.

It is an arithmetic number, because the mean of its divisors is an integer number (867543040).

Almost surely, 2^91448285607 is an apocalyptic number.

91448285607 is a gapful number since it is divisible by the number (97) formed by its first and last digit.

91448285607 is a deficient number, since it is larger than the sum of its proper divisors (75119978073).

91448285607 is a wasteful number, since it uses less digits than its factorization.

91448285607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 91448285607 in words is "ninety-one billion, four hundred forty-eight million, two hundred eighty-five thousand, six hundred seven".