5042600666 has 4 divisors (see below), whose sum is σ = 7563901002. Its totient is φ = 2521300332.

The previous prime is 5042600623. The next prime is 5042600671. The reversal of 5042600666 is 6660062405.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6660062405 = 5 ⋅1332012481.

It can be written as a sum of positive squares in only one way, i.e., 4953203641 + 89397025 = 70379^2 + 9455^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260650165 + ... + 1260650168.

Almost surely, 2^5042600666 is an apocalyptic number.

5042600666 is a deficient number, since it is larger than the sum of its proper divisors (2521300336).

5042600666 is a wasteful number, since it uses less digits than its factorization.

5042600666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2521300335.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 5042600666 is about 71011.2714010952. The cubic root of 5042600666 is about 1714.8186267915.

The spelling of 5042600666 in words is "five billion, forty-two million, six hundred thousand, six hundred sixty-six".