91653669053 has 4 divisors (see below), whose sum is σ = 91658761788. Its totient is φ = 91648576320.

The previous prime is 91653669043. The next prime is 91653669089. The reversal of 91653669053 is 35096635619.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61482673849 + 30170995204 = 247957^2 + 173698^2 .

It is a cyclic number.

It is not a de Polignac number, because 91653669053 - 2²⁴ = 91636891837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91653668986 and 91653669004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91653669043) by changing a digit.

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, 2519276 + ... + 2555397.

It is an arithmetic number, because the mean of its divisors is an integer number (22914690447).

Almost surely, 2^91653669053 is an apocalyptic number.

It is an amenable number.

91653669053 is a deficient number, since it is larger than the sum of its proper divisors (5092735).

91653669053 is a wasteful number, since it uses less digits than its factorization.

91653669053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5092734.

The product of its (nonzero) digits is 3936600, while the sum is 53.

It can be divided in two parts, 916536 and 69053, that added together give a palindrome (985589).

The spelling of 91653669053 in words is "ninety-one billion, six hundred fifty-three million, six hundred sixty-nine thousand, fifty-three".