12605453831 has 4 divisors (see below), whose sum is σ = 12606691152. Its totient is φ = 12604216512.

The previous prime is 12605453821. The next prime is 12605453837. The reversal of 12605453831 is 13835450621.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12605453831 is a prime.

It is a super-2 number, since 2×12605453831² (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 (12605453837) 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, 603251 + ... + 623796.

It is an arithmetic number, because the mean of its divisors is an integer number (3151672788).

Almost surely, 2^12605453831 is an apocalyptic number.

12605453831 is a deficient number, since it is larger than the sum of its proper divisors (1237321).

12605453831 is a wasteful number, since it uses less digits than its factorization.

12605453831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237320.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 12605453831 in words is "twelve billion, six hundred five million, four hundred fifty-three thousand, eight hundred thirty-one".