124978559543161 has 9 divisors (see below), whose sum is σ = 125245386181381. Its totient is φ = 124712300225884.

The previous prime is 124978559543083. The next prime is 124978559543171. The reversal of 124978559543161 is 161345955879421.

The square root of 124978559543161 is 11179381.

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

It is not a de Polignac number, because 124978559543161 - 2¹⁵ = 124978559510393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124978559543171) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5354911830 + ... + 5354935168.

Almost surely, 2^{124978559543161} is an apocalyptic number.

124978559543161 is the 11179381-st square number.

124978559543161 is the 5589691-st centered octagonal number.

It is an amenable number.

124978559543161 is a deficient number, since it is larger than the sum of its proper divisors (266826638220).

124978559543161 is an frugal number, since it uses more digits than its factorization.

124978559543161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47636 (or 23818 counting only the distinct ones).

The product of its digits is 326592000, while the sum is 70.

The spelling of 124978559543161 in words is "one hundred twenty-four trillion, nine hundred seventy-eight billion, five hundred fifty-nine million, five hundred forty-three thousand, one hundred sixty-one".