1607723000561 has 8 divisors (see below), whose sum is σ = 1639015977960. Its totient is φ = 1576465526272.

The previous prime is 1607723000489. The next prime is 1607723000567. The reversal of 1607723000561 is 1650003277061.

It can be written as a sum of positive squares in 4 ways, for example, as 203780016400 + 1403942984161 = 451420^2 + 1184881^2 .

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 1607723000561 - 2¹⁸ = 1607722738417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1607723000567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8784320 + ... + 8965473.

It is an arithmetic number, because the mean of its divisors is an integer number (204876997245).

Almost surely, 2^{1607723000561} is an apocalyptic number.

It is an amenable number.

1607723000561 is a deficient number, since it is larger than the sum of its proper divisors (31292977399).

1607723000561 is a wasteful number, since it uses less digits than its factorization.

1607723000561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17751555.

The product of its (nonzero) digits is 52920, while the sum is 38.

The spelling of 1607723000561 in words is "one trillion, six hundred seven billion, seven hundred twenty-three million, five hundred sixty-one", and thus it is an aban number.