123435949544 has 32 divisors (see below), whose sum is σ = 239281309440. Its totient is φ = 59633817600.

The previous prime is 123435949543. The next prime is 123435949573. The reversal of 123435949544 is 445949534321.

It is not an unprimeable number, because it can be changed into a prime (123435949543) 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, 229274 + ... + 547209.

It is an arithmetic number, because the mean of its divisors is an integer number (7477540920).

Almost surely, 2^123435949544 is an apocalyptic number.

It is an amenable number.

123435949544 is a deficient number, since it is larger than the sum of its proper divisors (115845359896).

123435949544 is a wasteful number, since it uses less digits than its factorization.

123435949544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777161 (or 777157 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 53.

The spelling of 123435949544 in words is "one hundred twenty-three billion, four hundred thirty-five million, nine hundred forty-nine thousand, five hundred forty-four".