10506957287 has 4 divisors (see below), whose sum is σ = 11125013616. Its totient is φ = 9888900960.

The previous prime is 10506957283. The next prime is 10506957289. The reversal of 10506957287 is 78275960501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10506957287 - 2² = 10506957283 is a prime.

It is a super-2 number, since 2×10506957287² (a number of 21 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 (10506957283) 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, 309028139 + ... + 309028172.

It is an arithmetic number, because the mean of its divisors is an integer number (2781253404).

Almost surely, 2^10506957287 is an apocalyptic number.

10506957287 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

10506957287 is a deficient number, since it is larger than the sum of its proper divisors (618056329).

10506957287 is an equidigital number, since it uses as much as digits as its factorization.

10506957287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618056328.

The product of its (nonzero) digits is 1058400, while the sum is 50.

The spelling of 10506957287 in words is "ten billion, five hundred six million, nine hundred fifty-seven thousand, two hundred eighty-seven".