12535489945 has 32 divisors (see below), whose sum is σ = 16627161600. Its totient is φ = 8996931840.

The previous prime is 12535489927. The next prime is 12535489949. The reversal of 12535489945 is 54998453521.

It is not a de Polignac number, because 12535489945 - 2²⁹ = 11998619033 is a prime.

It is a super-2 number, since 2×12535489945² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is not an unprimeable number, because it can be changed into a prime (12535489949) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1281744 + ... + 1291486.

It is an arithmetic number, because the mean of its divisors is an integer number (519598800).

Almost surely, 2^12535489945 is an apocalyptic number.

It is an amenable number.

12535489945 is a deficient number, since it is larger than the sum of its proper divisors (4091671655).

12535489945 is a wasteful number, since it uses less digits than its factorization.

12535489945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10065.

The product of its digits is 7776000, while the sum is 55.

The spelling of 12535489945 in words is "twelve billion, five hundred thirty-five million, four hundred eighty-nine thousand, nine hundred forty-five".