15663140100061 has 4 divisors (see below), whose sum is σ = 16344146191392. Its totient is φ = 14982134008732.

The previous prime is 15663140100043. The next prime is 15663140100071. The reversal of 15663140100061 is 16000104136651.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15663140100061 - 2¹⁹ = 15663139575773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15663140100071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340503045631 + ... + 340503045676.

It is an arithmetic number, because the mean of its divisors is an integer number (4086036547848).

Almost surely, 2^{15663140100061} is an apocalyptic number.

It is an amenable number.

15663140100061 is a deficient number, since it is larger than the sum of its proper divisors (681006091331).

15663140100061 is an equidigital number, since it uses as much as digits as its factorization.

15663140100061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681006091330.

The product of its (nonzero) digits is 12960, while the sum is 34.

The spelling of 15663140100061 in words is "fifteen trillion, six hundred sixty-three billion, one hundred forty million, one hundred thousand, sixty-one".