23489435493 has 24 divisors (see below), whose sum is σ = 34588003736. Its totient is φ = 15357081600.

The previous prime is 23489435491. The next prime is 23489435521. The reversal of 23489435493 is 39453498432.

23489435493 is a `hidden beast` number, since 2 + 3 + 4 + 8 + 94 + 3 + 549 + 3 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2346239844 + 21143195649 = 48438^2 + 145407^2 .

It is not a de Polignac number, because 23489435493 - 2¹ = 23489435491 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23489435491) 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 23 ways as a sum of consecutive naturals, for example, 121533 + ... + 248493.

Almost surely, 2^23489435493 is an apocalyptic number.

It is an amenable number.

23489435493 is a deficient number, since it is larger than the sum of its proper divisors (11098568243).

23489435493 is a wasteful number, since it uses less digits than its factorization.

23489435493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127365 (or 127362 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 54.

The spelling of 23489435493 in words is "twenty-three billion, four hundred eighty-nine million, four hundred thirty-five thousand, four hundred ninety-three".