90911855703643 has 8 divisors (see below), whose sum is σ = 98820076079088. Its totient is φ = 83134349714784.

The previous prime is 90911855703601. The next prime is 90911855703649. The reversal of 90911855703643 is 34630755811909.

It is a happy number.

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-90911855703643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90911855703649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32678595196 + ... + 32678597977.

It is an arithmetic number, because the mean of its divisors is an integer number (12352509509886).

Almost surely, 2^{90911855703643} is an apocalyptic number.

90911855703643 is a deficient number, since it is larger than the sum of its proper divisors (7908220375445).

90911855703643 is a wasteful number, since it uses less digits than its factorization.

90911855703643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65357193293.

The product of its (nonzero) digits is 24494400, while the sum is 61.

The spelling of 90911855703643 in words is "ninety trillion, nine hundred eleven billion, eight hundred fifty-five million, seven hundred three thousand, six hundred forty-three".