91876455445 has 8 divisors (see below), whose sum is σ = 110253467736. Its totient is φ = 73500016896.

The previous prime is 91876455371. The next prime is 91876455457. The reversal of 91876455445 is 54455467819.

It can be written as a sum of positive squares in 4 ways, for example, as 5455742769 + 86420712676 = 73863^2 + 293974^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91876455445 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91876455445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387609 + ... + 577921.

It is an arithmetic number, because the mean of its divisors is an integer number (13781683467).

Almost surely, 2^91876455445 is an apocalyptic number.

It is an amenable number.

91876455445 is a deficient number, since it is larger than the sum of its proper divisors (18377012291).

91876455445 is a wasteful number, since it uses less digits than its factorization.

91876455445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286871.

The product of its digits is 24192000, while the sum is 58.

The spelling of 91876455445 in words is "ninety-one billion, eight hundred seventy-six million, four hundred fifty-five thousand, four hundred forty-five".