155213234436315 has 64 divisors (see below), whose sum is σ = 272072543887872. Its totient is φ = 74934263040000.

The previous prime is 155213234436263. The next prime is 155213234436341. The reversal of 155213234436315 is 513634432312551.

It is a happy number.

It is not a de Polignac number, because 155213234436315 - 2⁶ = 155213234436251 is a prime.

It is a super-2 number, since 2×155213234436315² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 149113747 + ... + 150151043.

It is an arithmetic number, because the mean of its divisors is an integer number (4251133498248).

Almost surely, 2^{155213234436315} is an apocalyptic number.

155213234436315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155213234436315 is a deficient number, since it is larger than the sum of its proper divisors (116859309451557).

155213234436315 is a wasteful number, since it uses less digits than its factorization.

155213234436315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041180.

The product of its digits is 3888000, while the sum is 48.

Adding to 155213234436315 its reverse (513634432312551), we get a palindrome (668847666748866).

The spelling of 155213234436315 in words is "one hundred fifty-five trillion, two hundred thirteen billion, two hundred thirty-four million, four hundred thirty-six thousand, three hundred fifteen".