5166108621 has 12 divisors (see below), whose sum is σ = 7462811772. Its totient is φ = 3443770176.

The previous prime is 5166108601. The next prime is 5166108641. The reversal of 5166108621 is 1268016615.

5166108621 is a `hidden beast` number, since 5 + 16 + 6 + 10 + 8 + 621 = 666.

It is an interprime number because it is at equal distance from previous prime (5166108601) and next prime (5166108641).

It can be written as a sum of positive squares in 2 ways, for example, as 4964752521 + 201356100 = 70461^2 + 14190^2 .

It is not a de Polignac number, because 5166108621 - 2⁶ = 5166108557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5166108601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140275 + ... + 173231.

It is an arithmetic number, because the mean of its divisors is an integer number (621900981).

Almost surely, 2^5166108621 is an apocalyptic number.

It is an amenable number.

5166108621 is a deficient number, since it is larger than the sum of its proper divisors (2296703151).

5166108621 is a wasteful number, since it uses less digits than its factorization.

5166108621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50380 (or 50377 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 5166108621 is about 71875.6469257843. The cubic root of 5166108621 is about 1728.7061528837.

The spelling of 5166108621 in words is "five billion, one hundred sixty-six million, one hundred eight thousand, six hundred twenty-one".