10531415257 has 4 divisors (see below), whose sum is σ = 11488816656. Its totient is φ = 9574013860.

The previous prime is 10531415249. The next prime is 10531415269. The reversal of 10531415257 is 75251413501.

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 10531415257 - 2³ = 10531415249 is a prime.

It is a super-2 number, since 2×10531415257² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10531445257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 478700683 + ... + 478700704.

It is an arithmetic number, because the mean of its divisors is an integer number (2872204164).

Almost surely, 2^10531415257 is an apocalyptic number.

It is an amenable number.

10531415257 is a deficient number, since it is larger than the sum of its proper divisors (957401399).

10531415257 is an equidigital number, since it uses as much as digits as its factorization.

10531415257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957401398.

The product of its (nonzero) digits is 21000, while the sum is 34.

Adding to 10531415257 its reverse (75251413501), we get a palindrome (85782828758).

The spelling of 10531415257 in words is "ten billion, five hundred thirty-one million, four hundred fifteen thousand, two hundred fifty-seven".