123540505322 has 16 divisors (see below), whose sum is σ = 199705145640. Its totient is φ = 56978776512.

The previous prime is 123540505261. The next prime is 123540505331. The reversal of 123540505322 is 223505045321.

It can be written as a sum of positive squares in 4 ways, for example, as 97224852481 + 26315652841 = 311809^2 + 162221^2 .

It is a super-2 number, since 2×123540505322² (a number of 23 digits) contains 22 as substring.

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, 1625393 + ... + 1699700.

Almost surely, 2^123540505322 is an apocalyptic number.

123540505322 is a deficient number, since it is larger than the sum of its proper divisors (76164640318).

123540505322 is a wasteful number, since it uses less digits than its factorization.

123540505322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3326537.

The product of its (nonzero) digits is 36000, while the sum is 32.

The spelling of 123540505322 in words is "one hundred twenty-three billion, five hundred forty million, five hundred five thousand, three hundred twenty-two".