124199151561 has 27 divisors (see below), whose sum is σ = 181820663661. Its totient is φ = 81696362904.

The previous prime is 124199151551. The next prime is 124199151617. The reversal of 124199151561 is 165151991421.

The square root of 124199151561 is 352419.

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

124199151561 is a `hidden beast` number, since 1 + 2 + 41 + 9 + 91 + 515 + 6 + 1 = 666.

It is not a de Polignac number, because 124199151561 - 2⁹ = 124199151049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (124199151551) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 83522560 + ... + 83524046.

Almost surely, 2^124199151561 is an apocalyptic number.

124199151561 is the 352419-th square number.

124199151561 is the 176210-th centered octagonal number.

It is an amenable number.

124199151561 is a deficient number, since it is larger than the sum of its proper divisors (57621512100).

124199151561 is an frugal number, since it uses more digits than its factorization.

124199151561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3138 (or 1569 counting only the distinct ones).

The product of its digits is 97200, while the sum is 45.

The spelling of 124199151561 in words is "one hundred twenty-four billion, one hundred ninety-nine million, one hundred fifty-one thousand, five hundred sixty-one".