1561072464601 has 16 divisors (see below), whose sum is σ = 1724888366208. Its totient is φ = 1403615606400.

The previous prime is 1561072464577. The next prime is 1561072464607. The reversal of 1561072464601 is 1064642701651.

It is a cyclic number.

It is not a de Polignac number, because 1561072464601 - 2¹¹ = 1561072462553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1561072464607) 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, 1984471 + ... + 2657116.

It is an arithmetic number, because the mean of its divisors is an integer number (107805522888).

Almost surely, 2^{1561072464601} is an apocalyptic number.

It is an amenable number.

1561072464601 is a deficient number, since it is larger than the sum of its proper divisors (163815901607).

1561072464601 is a wasteful number, since it uses less digits than its factorization.

1561072464601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4642272.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 1561072464601 in words is "one trillion, five hundred sixty-one billion, seventy-two million, four hundred sixty-four thousand, six hundred one".