124546442666 has 4 divisors (see below), whose sum is σ = 186819664002. Its totient is φ = 62273221332.

The previous prime is 124546442663. The next prime is 124546442681. The reversal of 124546442666 is 666244645421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 666244645421 = 467 ⋅1426648063.

It can be written as a sum of positive squares in only one way, i.e., 90255180625 + 34291262041 = 300425^2 + 185179^2 .

It is not an unprimeable number, because it can be changed into a prime (124546442663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31136610665 + ... + 31136610668.

Almost surely, 2^124546442666 is an apocalyptic number.

124546442666 is a deficient number, since it is larger than the sum of its proper divisors (62273221336).

124546442666 is an equidigital number, since it uses as much as digits as its factorization.

124546442666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62273221335.

The product of its digits is 6635520, while the sum is 50.

The spelling of 124546442666 in words is "one hundred twenty-four billion, five hundred forty-six million, four hundred forty-two thousand, six hundred sixty-six".