124355561671 has 4 divisors (see below), whose sum is σ = 135660612744. Its totient is φ = 113050510600.

The previous prime is 124355561651. The next prime is 124355561749. The reversal of 124355561671 is 176165553421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124355561671 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 (124355561651) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5652525520 + ... + 5652525541.

It is an arithmetic number, because the mean of its divisors is an integer number (33915153186).

Almost surely, 2^124355561671 is an apocalyptic number.

124355561671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

124355561671 is a deficient number, since it is larger than the sum of its proper divisors (11305051073).

124355561671 is a wasteful number, since it uses less digits than its factorization.

124355561671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11305051072.

The product of its digits is 756000, while the sum is 46.

The spelling of 124355561671 in words is "one hundred twenty-four billion, three hundred fifty-five million, five hundred sixty-one thousand, six hundred seventy-one".