12953238857 has 8 divisors (see below), whose sum is σ = 13964542536. Its totient is φ = 11944063872.

The previous prime is 12953238829. The next prime is 12953238913. The reversal of 12953238857 is 75883235921.

It can be written as a sum of positive squares in 4 ways, for example, as 43507216 + 12909731641 = 6596^2 + 113621^2 .

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

It is not a de Polignac number, because 12953238857 - 2¹² = 12953234761 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12953238799 and 12953238808.

It is not an unprimeable number, because it can be changed into a prime (12953238817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 519518 + ... + 543879.

It is an arithmetic number, because the mean of its divisors is an integer number (1745567817).

Almost surely, 2^12953238857 is an apocalyptic number.

It is an amenable number.

12953238857 is a deficient number, since it is larger than the sum of its proper divisors (1011303679).

12953238857 is a wasteful number, since it uses less digits than its factorization.

12953238857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064347.

The product of its digits is 3628800, while the sum is 53.

The spelling of 12953238857 in words is "twelve billion, nine hundred fifty-three million, two hundred thirty-eight thousand, eight hundred fifty-seven".