123004201546556 has 24 divisors (see below), whose sum is σ = 234883857653424. Its totient is φ = 55897273393280.

The previous prime is 123004201546543. The next prime is 123004201546561. The reversal of 123004201546556 is 655645102400321.

It is a super-2 number, since 2×123004201546556² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343001495 + ... + 343359918.

It is an arithmetic number, because the mean of its divisors is an integer number (9786827402226).

Almost surely, 2^{123004201546556} is an apocalyptic number.

It is an amenable number.

123004201546556 is a deficient number, since it is larger than the sum of its proper divisors (111879656106868).

123004201546556 is a wasteful number, since it uses less digits than its factorization.

123004201546556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686365501 (or 686365499 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 44.

Adding to 123004201546556 its reverse (655645102400321), we get a palindrome (778649303946877).

The spelling of 123004201546556 in words is "one hundred twenty-three trillion, four billion, two hundred one million, five hundred forty-six thousand, five hundred fifty-six".