4399376635520 has 64 divisors (see below), whose sum is σ = 10517925146400. Its totient is φ = 1759639323648.

The previous prime is 4399376635441. The next prime is 4399376635523. The reversal of 4399376635520 is 255366739934.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (4399376635523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10304051 + ... + 10722509.

Almost surely, 2^{4399376635520} is an apocalyptic number.

4399376635520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4399376635520 is an abundant number, since it is smaller than the sum of its proper divisors (6118548510880).

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

4399376635520 is a wasteful number, since it uses less digits than its factorization.

4399376635520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434905 (or 434893 counting only the distinct ones).

The product of its (nonzero) digits is 110224800, while the sum is 62.

The spelling of 4399376635520 in words is "four trillion, three hundred ninety-nine billion, three hundred seventy-six million, six hundred thirty-five thousand, five hundred twenty".