123880065156 has 27 divisors (see below), whose sum is σ = 313146614053. Its totient is φ = 41292651120.

The previous prime is 123880065119. The next prime is 123880065161. The reversal of 123880065156 is 651560088321.

The square root of 123880065156 is 351966.

It is a perfect power (a square), and thus also a powerful number.

123880065156 is a `hidden beast` number, since 123 + 8 + 8 + 0 + 0 + 6 + 515 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9933311556 + 113946753600 = 99666^2 + 337560^2 .

It is a Duffinian 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 8 ways as a sum of consecutive naturals, for example, 2082466 + ... + 2141126.

Almost surely, 2^123880065156 is an apocalyptic number.

123880065156 is the 351966-th square number.

It is an amenable number.

123880065156 is an abundant number, since it is smaller than the sum of its proper divisors (189266548897).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123880065156 is an frugal number, since it uses more digits than its factorization.

123880065156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117332 (or 58666 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 123880065156 in words is "one hundred twenty-three billion, eight hundred eighty million, sixty-five thousand, one hundred fifty-six".