123532155215 has 8 divisors (see below), whose sum is σ = 169415527200. Its totient is φ = 84707763552.

The previous prime is 123532155203. The next prime is 123532155221. The reversal of 123532155215 is 512551235321.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 123532155215 - 2¹⁶ = 123532089679 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 3529490149 = 123532155215 / (1 + 2 + 3 + 5 + 3 + 2 + 1 + 5 + 5 + 2 + 1 + 5).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1764745040 + ... + 1764745109.

It is an arithmetic number, because the mean of its divisors is an integer number (21176940900).

Almost surely, 2^123532155215 is an apocalyptic number.

123532155215 is a deficient number, since it is larger than the sum of its proper divisors (45883371985).

123532155215 is an equidigital number, since it uses as much as digits as its factorization.

123532155215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3529490161.

The product of its digits is 45000, while the sum is 35.

The spelling of 123532155215 in words is "one hundred twenty-three billion, five hundred thirty-two million, one hundred fifty-five thousand, two hundred fifteen".