113153123521 has 8 divisors (see below), whose sum is σ = 116164413288. Its totient is φ = 110153808000.

The previous prime is 113153123453. The next prime is 113153123543. The reversal of 113153123521 is 125321351311.

It can be written as a sum of positive squares in 4 ways, for example, as 734410000 + 112418713521 = 27100^2 + 335289^2 .

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 113153123521 - 2²¹ = 113151026369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113153123521.

It is not an unprimeable number, because it can be changed into a prime (113153129521) 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 7 ways as a sum of consecutive naturals, for example, 2974410 + ... + 3012211.

It is an arithmetic number, because the mean of its divisors is an integer number (14520551661).

Almost surely, 2^113153123521 is an apocalyptic number.

It is an amenable number.

113153123521 is a deficient number, since it is larger than the sum of its proper divisors (3011289767).

113153123521 is an equidigital number, since it uses as much as digits as its factorization.

113153123521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5987123.

The product of its digits is 2700, while the sum is 28.

Adding to 113153123521 its reverse (125321351311), we get a palindrome (238474474832).

The spelling of 113153123521 in words is "one hundred thirteen billion, one hundred fifty-three million, one hundred twenty-three thousand, five hundred twenty-one".