14000071257 has 6 divisors (see below), whose sum is σ = 20222325162. Its totient is φ = 9333380832.

The previous prime is 14000071247. The next prime is 14000071277. The reversal of 14000071257 is 75217000041.

14000071257 is a `hidden beast` number, since 1 + 400 + 0 + 0 + 7 + 1 + 257 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9382053321 + 4618017936 = 96861^2 + 67956^2 .

It is not a de Polignac number, because 14000071257 - 2¹² = 14000067161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 14000071257.

It is not an unprimeable number, because it can be changed into a prime (14000071247) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 777781728 + ... + 777781745.

It is an arithmetic number, because the mean of its divisors is an integer number (3370387527).

Almost surely, 2^14000071257 is an apocalyptic number.

It is an amenable number.

14000071257 is a deficient number, since it is larger than the sum of its proper divisors (6222253905).

14000071257 is a wasteful number, since it uses less digits than its factorization.

14000071257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555563479 (or 1555563476 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

Adding to 14000071257 its reverse (75217000041), we get a palindrome (89217071298).

The spelling of 14000071257 in words is "fourteen billion, seventy-one thousand, two hundred fifty-seven".