6665623531445 has 32 divisors (see below), whose sum is σ = 8126125163520. Its totient is φ = 5248450080000.

The previous prime is 6665623531367. The next prime is 6665623531453. The reversal of 6665623531445 is 5441353265666.

It is not a de Polignac number, because 6665623531445 - 2¹⁶ = 6665623465909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36943511 + ... + 37123499.

It is an arithmetic number, because the mean of its divisors is an integer number (253941411360).

Almost surely, 2^{6665623531445} is an apocalyptic number.

It is an amenable number.

6665623531445 is a deficient number, since it is larger than the sum of its proper divisors (1460501632075).

6665623531445 is a wasteful number, since it uses less digits than its factorization.

6665623531445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180597.

The product of its digits is 46656000, while the sum is 56.

The spelling of 6665623531445 in words is "six trillion, six hundred sixty-five billion, six hundred twenty-three million, five hundred thirty-one thousand, four hundred forty-five".