91624081652 has 12 divisors (see below), whose sum is σ = 167313540576. Its totient is φ = 43820212920.

The previous prime is 91624081649. The next prime is 91624081663. The reversal of 91624081652 is 25618042619.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497956874 + ... + 497957057.

It is an arithmetic number, because the mean of its divisors is an integer number (13942795048).

Almost surely, 2^91624081652 is an apocalyptic number.

91624081652 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

91624081652 is a deficient number, since it is larger than the sum of its proper divisors (75689458924).

91624081652 is a wasteful number, since it uses less digits than its factorization.

91624081652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995913958 (or 995913956 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The spelling of 91624081652 in words is "ninety-one billion, six hundred twenty-four million, eighty-one thousand, six hundred fifty-two".