123200344553645 has 16 divisors (see below), whose sum is σ = 148909619376000. Its totient is φ = 97847525091648.

The previous prime is 123200344553639. The next prime is 123200344553669. The reversal of 123200344553645 is 546355443002321.

It is a cyclic number.

It is not a de Polignac number, because 123200344553645 - 2⁶ = 123200344553581 is a prime.

It is a super-3 number, since 3×123200344553645³ (a number of 43 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 123200344553645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15211496 + ... + 21858414.

It is an arithmetic number, because the mean of its divisors is an integer number (9306851211000).

Almost surely, 2^{123200344553645} is an apocalyptic number.

It is an amenable number.

123200344553645 is a deficient number, since it is larger than the sum of its proper divisors (25709274822355).

123200344553645 is a wasteful number, since it uses less digits than its factorization.

123200344553645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6673732.

The product of its (nonzero) digits is 5184000, while the sum is 47.

Adding to 123200344553645 its reverse (546355443002321), we get a palindrome (669555787555966).

The spelling of 123200344553645 in words is "one hundred twenty-three trillion, two hundred billion, three hundred forty-four million, five hundred fifty-three thousand, six hundred forty-five".