91445264052 has 96 divisors (see below), whose sum is σ = 222744453120. Its totient is φ = 29178764160.

The previous prime is 91445263999. The next prime is 91445264069. The reversal of 91445264052 is 25046254419.

It is a junction number, because it is equal to n+sod(n) for n = 91445263995 and 91445264013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4757902 + ... + 4777082.

It is an arithmetic number, because the mean of its divisors is an integer number (2320254720).

Almost surely, 2^91445264052 is an apocalyptic number.

It is an amenable number.

91445264052 is an abundant number, since it is smaller than the sum of its proper divisors (131299189068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91445264052 is a wasteful number, since it uses less digits than its factorization.

91445264052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19421 (or 19419 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 91445264052 in words is "ninety-one billion, four hundred forty-five million, two hundred sixty-four thousand, fifty-two".