91488072453 has 4 divisors (see below), whose sum is σ = 121984096608. Its totient is φ = 60992048300.

The previous prime is 91488072443. The next prime is 91488072469. The reversal of 91488072453 is 35427088419.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 91488072453 - 2⁴ = 91488072437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91488072396 and 91488072405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91488072443) by changing a digit.

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, 15248012073 + ... + 15248012078.

It is an arithmetic number, because the mean of its divisors is an integer number (30496024152).

Almost surely, 2^91488072453 is an apocalyptic number.

It is an amenable number.

91488072453 is a deficient number, since it is larger than the sum of its proper divisors (30496024155).

91488072453 is a wasteful number, since it uses less digits than its factorization.

91488072453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30496024154.

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 91488072453 in words is "ninety-one billion, four hundred eighty-eight million, seventy-two thousand, four hundred fifty-three".