91522649644 has 12 divisors (see below), whose sum is σ = 165687555600. Its totient is φ = 44183348048.

The previous prime is 91522649623. The next prime is 91522649653. The reversal of 91522649644 is 44694622519.

It is a junction number, because it is equal to n+sod(n) for n = 91522649591 and 91522649600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394494064 + ... + 394494295.

It is an arithmetic number, because the mean of its divisors is an integer number (13807296300).

Almost surely, 2^91522649644 is an apocalyptic number.

It is an amenable number.

91522649644 is a deficient number, since it is larger than the sum of its proper divisors (74164905956).

91522649644 is a wasteful number, since it uses less digits than its factorization.

91522649644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788988392 (or 788988390 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 52.

The spelling of 91522649644 in words is "ninety-one billion, five hundred twenty-two million, six hundred forty-nine thousand, six hundred forty-four".