3099721636440 has 384 divisors, whose sum is σ = 11879351265600. Its totient is φ = 691062312960.

The previous prime is 3099721636411. The next prime is 3099721636477. The reversal of 3099721636440 is 446361279903.

It is a happy number.

3099721636440 is a `hidden beast` number, since 3 + 0 + 99 + 72 + 16 + 36 + 440 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13736202 + ... + 13960038.

Almost surely, 2^{3099721636440} is an apocalyptic number.

3099721636440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3099721636440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5939675632800).

3099721636440 is an abundant number, since it is smaller than the sum of its proper divisors (8779629629160).

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

3099721636440 is a wasteful number, since it uses less digits than its factorization.

3099721636440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224147 (or 224140 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 54.

The spelling of 3099721636440 in words is "three trillion, ninety-nine billion, seven hundred twenty-one million, six hundred thirty-six thousand, four hundred forty".