123415553155 has 8 divisors (see below), whose sum is σ = 148422733632. Its totient is φ = 98516395968.

The previous prime is 123415553011. The next prime is 123415553207. The reversal of 123415553155 is 551355514321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123415553155 is a prime.

It is a super-3 number, since 3×123415553155³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian 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, 27003307 + ... + 27007876.

It is an arithmetic number, because the mean of its divisors is an integer number (18552841704).

Almost surely, 2^123415553155 is an apocalyptic number.

123415553155 is a deficient number, since it is larger than the sum of its proper divisors (25007180477).

123415553155 is an equidigital number, since it uses as much as digits as its factorization.

123415553155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54011645.

The product of its digits is 225000, while the sum is 40.

The spelling of 123415553155 in words is "one hundred twenty-three billion, four hundred fifteen million, five hundred fifty-three thousand, one hundred fifty-five".