536406321666 has 8 divisors (see below), whose sum is σ = 1072812643344. Its totient is φ = 178802107220.

The previous prime is 536406321653. The next prime is 536406321679. The reversal of 536406321666 is 666123604635.

It is an interprime number because it is at equal distance from previous prime (536406321653) and next prime (536406321679).

It is a sphenic number, since it is the product of 3 distinct primes.

536406321666 is an admirable number.

It is a super-2 number, since 2×536406321666² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44700526800 + ... + 44700526811.

It is an arithmetic number, because the mean of its divisors is an integer number (134101580418).

Almost surely, 2^536406321666 is an apocalyptic number.

536406321666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

536406321666 is a wasteful number, since it uses less digits than its factorization.

536406321666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89401053616.

The product of its (nonzero) digits is 2799360, while the sum is 48.

The spelling of 536406321666 in words is "five hundred thirty-six billion, four hundred six million, three hundred twenty-one thousand, six hundred sixty-six".