6615501456443 has 4 divisors (see below), whose sum is σ = 7216910679768. Its totient is φ = 6014092233120.

The previous prime is 6615501456413. The next prime is 6615501456497. The reversal of 6615501456443 is 3446541055166.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6615501456443 - 2¹² = 6615501452347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6615501456391 and 6615501456400.

It is not an unprimeable number, because it can be changed into a prime (6615501456413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300704611646 + ... + 300704611667.

It is an arithmetic number, because the mean of its divisors is an integer number (1804227669942).

Almost surely, 2^{6615501456443} is an apocalyptic number.

6615501456443 is a deficient number, since it is larger than the sum of its proper divisors (601409223325).

6615501456443 is a wasteful number, since it uses less digits than its factorization.

6615501456443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601409223324.

The product of its (nonzero) digits is 5184000, while the sum is 50.

The spelling of 6615501456443 in words is "six trillion, six hundred fifteen billion, five hundred one million, four hundred fifty-six thousand, four hundred forty-three".