4999969913521 has 24 divisors (see below), whose sum is σ = 5565898316160. Its totient is φ = 4487490115680.

The previous prime is 4999969913467. The next prime is 4999969913537. The reversal of 4999969913521 is 1253199699994.

It is not a de Polignac number, because 4999969913521 - 2²⁹ = 4999433042609 is a prime.

It is a super-2 number, since 2×4999969913521² (a number of 26 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (76) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4999969913591) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179666610 + ... + 179694436.

It is an arithmetic number, because the mean of its divisors is an integer number (231912429840).

Almost surely, 2^{4999969913521} is an apocalyptic number.

It is an amenable number.

4999969913521 is a deficient number, since it is larger than the sum of its proper divisors (565928402639).

4999969913521 is a wasteful number, since it uses less digits than its factorization.

4999969913521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46725 (or 46714 counting only the distinct ones).

The product of its digits is 382637520, while the sum is 76.

The spelling of 4999969913521 in words is "four trillion, nine hundred ninety-nine billion, nine hundred sixty-nine million, nine hundred thirteen thousand, five hundred twenty-one".