123577543621 has 8 divisors (see below), whose sum is σ = 141430682240. Its totient is φ = 105774205968.

The previous prime is 123577543613. The next prime is 123577543627. The reversal of 123577543621 is 126345775321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123577543621 - 2³ = 123577543613 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 (123577543627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12444921 + ... + 12454846.

It is an arithmetic number, because the mean of its divisors is an integer number (17678835280).

Almost surely, 2^123577543621 is an apocalyptic number.

It is an amenable number.

123577543621 is a deficient number, since it is larger than the sum of its proper divisors (17853138619).

123577543621 is an equidigital number, since it uses as much as digits as its factorization.

123577543621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24900483.

The product of its digits is 1058400, while the sum is 46.

The spelling of 123577543621 in words is "one hundred twenty-three billion, five hundred seventy-seven million, five hundred forty-three thousand, six hundred twenty-one".