16461065462721 has 16 divisors (see below), whose sum is σ = 25203545207040. Its totient is φ = 9451329451920.

The previous prime is 16461065462713. The next prime is 16461065462729. The reversal of 16461065462721 is 12726456016461.

It is an interprime number because it is at equal distance from previous prime (16461065462713) and next prime (16461065462729).

It is not a de Polignac number, because 16461065462721 - 2³ = 16461065462713 is a prime.

It is a super-2 number, since 2×16461065462721² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16461065462729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13126845835 + ... + 13126847088.

It is an arithmetic number, because the mean of its divisors is an integer number (1575221575440).

Almost surely, 2^{16461065462721} is an apocalyptic number.

16461065462721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16461065462721 is a deficient number, since it is larger than the sum of its proper divisors (8742479744319).

16461065462721 is a wasteful number, since it uses less digits than its factorization.

16461065462721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26253692956.

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 16461065462721 in words is "sixteen trillion, four hundred sixty-one billion, sixty-five million, four hundred sixty-two thousand, seven hundred twenty-one".