6156601051561 has 8 divisors (see below), whose sum is σ = 6535174097160. Its totient is φ = 5779852455168.

The previous prime is 6156601051543. The next prime is 6156601051571. The reversal of 6156601051561 is 1651501066516.

It can be written as a sum of positive squares in 4 ways, for example, as 1368534984336 + 4788066067225 = 1169844^2 + 2188165^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6156601051561 - 2⁹ = 6156601051049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6156601051571) 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, 456105346 + ... + 456118843.

It is an arithmetic number, because the mean of its divisors is an integer number (816896762145).

Almost surely, 2^{6156601051561} is an apocalyptic number.

It is an amenable number.

6156601051561 is a deficient number, since it is larger than the sum of its proper divisors (378573045599).

6156601051561 is a wasteful number, since it uses less digits than its factorization.

6156601051561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912224603.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 6156601051561 in words is "six trillion, one hundred fifty-six billion, six hundred one million, fifty-one thousand, five hundred sixty-one".