561665156014 has 16 divisors (see below), whose sum is σ = 844858003968. Its totient is φ = 280046100832.

The previous prime is 561665156011. The next prime is 561665156047. The reversal of 561665156014 is 410651566165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561665156011) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4128444 + ... + 4262320.

It is an arithmetic number, because the mean of its divisors is an integer number (52803625248).

Almost surely, 2^561665156014 is an apocalyptic number.

561665156014 is a deficient number, since it is larger than the sum of its proper divisors (283192847954).

561665156014 is a wasteful number, since it uses less digits than its factorization.

561665156014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139739.

The product of its (nonzero) digits is 648000, while the sum is 46.

The spelling of 561665156014 in words is "five hundred sixty-one billion, six hundred sixty-five million, one hundred fifty-six thousand, fourteen".