123411125400155 has 16 divisors (see below), whose sum is σ = 156829306122720. Its totient is φ = 92906750787072.

The previous prime is 123411125400151. The next prime is 123411125400179. The reversal of 123411125400155 is 551004521114321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 123411125400155 - 2² = 123411125400151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123411125400151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113260544 + ... + 114344973.

It is an arithmetic number, because the mean of its divisors is an integer number (9801831632670).

Almost surely, 2^{123411125400155} is an apocalyptic number.

123411125400155 is a deficient number, since it is larger than the sum of its proper divisors (33418180722565).

123411125400155 is a wasteful number, since it uses less digits than its factorization.

123411125400155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227611918.

The product of its (nonzero) digits is 24000, while the sum is 35.

Adding to 123411125400155 its reverse (551004521114321), we get a palindrome (674415646514476).

The spelling of 123411125400155 in words is "one hundred twenty-three trillion, four hundred eleven billion, one hundred twenty-five million, four hundred thousand, one hundred fifty-five".