6615660056007 has 4 divisors (see below), whose sum is σ = 8820880074680. Its totient is φ = 4410440037336.

The previous prime is 6615660055957. The next prime is 6615660056053. The reversal of 6615660056007 is 7006500665166.

It is a happy number.

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

It is not a de Polignac number, because 6615660056007 - 2¹² = 6615660051911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6615660056407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1102610009332 + ... + 1102610009337.

It is an arithmetic number, because the mean of its divisors is an integer number (2205220018670).

Almost surely, 2^{6615660056007} is an apocalyptic number.

6615660056007 is a deficient number, since it is larger than the sum of its proper divisors (2205220018673).

6615660056007 is a wasteful number, since it uses less digits than its factorization.

6615660056007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2205220018672.

The product of its (nonzero) digits is 1360800, while the sum is 48.

The spelling of 6615660056007 in words is "six trillion, six hundred fifteen billion, six hundred sixty million, fifty-six thousand, seven".