124781606501 has 4 divisors (see below), whose sum is σ = 124792186752. Its totient is φ = 124771026252.

The previous prime is 124781606473. The next prime is 124781606507. The reversal of 124781606501 is 105606187421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 124781606501 - 2¹⁴ = 124781590117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124781606507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5272415 + ... + 5296028.

It is an arithmetic number, because the mean of its divisors is an integer number (31198046688).

Almost surely, 2^124781606501 is an apocalyptic number.

It is an amenable number.

124781606501 is a deficient number, since it is larger than the sum of its proper divisors (10580251).

124781606501 is a wasteful number, since it uses less digits than its factorization.

124781606501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10580250.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 124781606501 in words is "one hundred twenty-four billion, seven hundred eighty-one million, six hundred six thousand, five hundred one".