89721723157 has 8 divisors (see below), whose sum is σ = 103635787392. Its totient is φ = 76767249600.

The previous prime is 89721723149. The next prime is 89721723187. The reversal of 89721723157 is 75132712798.

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

It is a cyclic number.

It is not a de Polignac number, because 89721723157 - 2³ = 89721723149 is a prime.

It is a super-2 number, since 2×89721723157² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89721723187) 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 7 ways as a sum of consecutive naturals, for example, 239897469 + ... + 239897842.

It is an arithmetic number, because the mean of its divisors is an integer number (12954473424).

Almost surely, 2^89721723157 is an apocalyptic number.

It is an amenable number.

89721723157 is a deficient number, since it is larger than the sum of its proper divisors (13914064235).

89721723157 is a wasteful number, since it uses less digits than its factorization.

89721723157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479795339.

The product of its digits is 1481760, while the sum is 52.

The spelling of 89721723157 in words is "eighty-nine billion, seven hundred twenty-one million, seven hundred twenty-three thousand, one hundred fifty-seven".