5166121520 has 40 divisors (see below), whose sum is σ = 13727124384. Its totient is φ = 1771241472.

The previous prime is 5166121487. The next prime is 5166121531. The reversal of 5166121520 is 251216615.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×5166121520² = 53377623118814220800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4612049 + ... + 4613168.

Almost surely, 2^5166121520 is an apocalyptic number.

It is an amenable number.

5166121520 is an abundant number, since it is smaller than the sum of its proper divisors (8561002864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5166121520 is a wasteful number, since it uses less digits than its factorization.

5166121520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9225237 (or 9225231 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 5166121520 is about 71875.7366570945. The cubic root of 5166121520 is about 1728.7075916560.

The spelling of 5166121520 in words is "five billion, one hundred sixty-six million, one hundred twenty-one thousand, five hundred twenty".