12530434534 has 4 divisors (see below), whose sum is σ = 18795651804. Its totient is φ = 6265217266.

The previous prime is 12530434519. The next prime is 12530434559. The reversal of 12530434534 is 43543403521.

It is a happy number.

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

It is a super-2 number, since 2×12530434534² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12530434534.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3132608632 + ... + 3132608635.

It is an arithmetic number, because the mean of its divisors is an integer number (4698912951).

Almost surely, 2^12530434534 is an apocalyptic number.

12530434534 is a deficient number, since it is larger than the sum of its proper divisors (6265217270).

12530434534 is an equidigital number, since it uses as much as digits as its factorization.

12530434534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6265217269.

The product of its (nonzero) digits is 86400, while the sum is 34.

The spelling of 12530434534 in words is "twelve billion, five hundred thirty million, four hundred thirty-four thousand, five hundred thirty-four".