135223231500621 has 24 divisors (see below), whose sum is σ = 213806263690656. Its totient is φ = 81673768931040.

The previous prime is 135223231500583. The next prime is 135223231500629. The reversal of 135223231500621 is 126005132322531.

135223231500621 is a `hidden beast` number, since 1 + 3 + 5 + 2 + 2 + 3 + 23 + 1 + 5 + 0 + 0 + 621 = 666.

It is not a de Polignac number, because 135223231500621 - 2¹⁵ = 135223231467853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135223231500629) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2330843395 + ... + 2330901408.

It is an arithmetic number, because the mean of its divisors is an integer number (8908594320444).

Almost surely, 2^{135223231500621} is an apocalyptic number.

135223231500621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

135223231500621 is a deficient number, since it is larger than the sum of its proper divisors (78583032190035).

135223231500621 is a wasteful number, since it uses less digits than its factorization.

135223231500621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4661745113 (or 4661745110 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 135223231500621 in words is "one hundred thirty-five trillion, two hundred twenty-three billion, two hundred thirty-one million, five hundred thousand, six hundred twenty-one".