123537653656 has 16 divisors (see below), whose sum is σ = 231766786800. Its totient is φ = 61733177184.

The previous prime is 123537653653. The next prime is 123537653741. The reversal of 123537653656 is 656356735321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123537653653) 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, 4441476 + ... + 4469203.

It is an arithmetic number, because the mean of its divisors is an integer number (14485424175).

Almost surely, 2^123537653656 is an apocalyptic number.

It is an amenable number.

123537653656 is a deficient number, since it is larger than the sum of its proper divisors (108229133144).

123537653656 is a wasteful number, since it uses less digits than its factorization.

123537653656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8912418 (or 8912414 counting only the distinct ones).

The product of its digits is 10206000, while the sum is 52.

The spelling of 123537653656 in words is "one hundred twenty-three billion, five hundred thirty-seven million, six hundred fifty-three thousand, six hundred fifty-six".