405666431516 has 6 divisors (see below), whose sum is σ = 709916255160. Its totient is φ = 202833215756.

The previous prime is 405666431503. The next prime is 405666431549. The reversal of 405666431516 is 615134666504.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 50708303936 + ... + 50708303943.

It is an arithmetic number, because the mean of its divisors is an integer number (118319375860).

Almost surely, 2^405666431516 is an apocalyptic number.

It is an amenable number.

405666431516 is a deficient number, since it is larger than the sum of its proper divisors (304249823644).

405666431516 is a wasteful number, since it uses less digits than its factorization.

405666431516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101416607883 (or 101416607881 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 405666431516 in words is "four hundred five billion, six hundred sixty-six million, four hundred thirty-one thousand, five hundred sixteen".