12259535064 has 32 divisors (see below), whose sum is σ = 35027243520. Its totient is φ = 3502724256.

The previous prime is 12259534981. The next prime is 12259535069. The reversal of 12259535064 is 46053595221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12259535069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36486544 + ... + 36486879.

It is an arithmetic number, because the mean of its divisors is an integer number (1094601360).

Almost surely, 2^12259535064 is an apocalyptic number.

12259535064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12259535064 is an abundant number, since it is smaller than the sum of its proper divisors (22767708456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12259535064 is a wasteful number, since it uses less digits than its factorization.

12259535064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72973439 (or 72973435 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 12259535064 in words is "twelve billion, two hundred fifty-nine million, five hundred thirty-five thousand, sixty-four".