16040621144863 has 16 divisors (see below), whose sum is σ = 18600297520896. Its totient is φ = 13548329818560.

The previous prime is 16040621144851. The next prime is 16040621144887. The reversal of 16040621144863 is 36844112604061.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16040621144863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16040621144893) 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, 13828681 + ... + 14943682.

It is an arithmetic number, because the mean of its divisors is an integer number (1162518595056).

Almost surely, 2^{16040621144863} is an apocalyptic number.

16040621144863 is a deficient number, since it is larger than the sum of its proper divisors (2559676376033).

16040621144863 is a wasteful number, since it uses less digits than its factorization.

16040621144863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28773534.

The product of its (nonzero) digits is 663552, while the sum is 46.

The spelling of 16040621144863 in words is "sixteen trillion, forty billion, six hundred twenty-one million, one hundred forty-four thousand, eight hundred sixty-three".