6662606353531 has 4 divisors (see below), whose sum is σ = 6680185790200. Its totient is φ = 6645026916864.

The previous prime is 6662606353411. The next prime is 6662606353561. The reversal of 6662606353531 is 1353536062666.

It is a happy number.

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 6662606353531 - 2³⁹ = 6112850539643 is a prime.

It is a super-2 number, since 2×6662606353531² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6662606353561) 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, 8789717766 + ... + 8789718523.

It is an arithmetic number, because the mean of its divisors is an integer number (1670046447550).

Almost surely, 2^{6662606353531} is an apocalyptic number.

6662606353531 is a deficient number, since it is larger than the sum of its proper divisors (17579436669).

6662606353531 is a wasteful number, since it uses less digits than its factorization.

6662606353531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17579436668.

The product of its (nonzero) digits is 10497600, while the sum is 52.

The spelling of 6662606353531 in words is "six trillion, six hundred sixty-two billion, six hundred six million, three hundred fifty-three thousand, five hundred thirty-one".