14531257081 has 4 divisors (see below), whose sum is σ = 15852280464. Its totient is φ = 13210233700.

The previous prime is 14531257079. The next prime is 14531257129. The reversal of 14531257081 is 18075213541.

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 14531257081 - 2¹ = 14531257079 is a prime.

It is a super-2 number, since 2×14531257081² (a number of 21 digits) contains 22 as substring.

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 14531257081.

It is not an unprimeable number, because it can be changed into a prime (14531257031) 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, 660511675 + ... + 660511696.

It is an arithmetic number, because the mean of its divisors is an integer number (3963070116).

Almost surely, 2^14531257081 is an apocalyptic number.

14531257081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

14531257081 is a deficient number, since it is larger than the sum of its proper divisors (1321023383).

14531257081 is a wasteful number, since it uses less digits than its factorization.

14531257081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321023382.

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 14531257081 in words is "fourteen billion, five hundred thirty-one million, two hundred fifty-seven thousand, eighty-one".