1260502440561 has 48 divisors (see below), whose sum is σ = 2288571876864. Its totient is φ = 650733996672.

The previous prime is 1260502440553. The next prime is 1260502440607. The reversal of 1260502440561 is 1650442050621.

1260502440561 is a `hidden beast` number, since 1 + 2 + 6 + 0 + 50 + 2 + 4 + 40 + 561 = 666.

It is not a de Polignac number, because 1260502440561 - 2³ = 1260502440553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1260502440761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16334646 + ... + 16411631.

It is an arithmetic number, because the mean of its divisors is an integer number (47678580768).

Almost surely, 2^{1260502440561} is an apocalyptic number.

It is an amenable number.

1260502440561 is a deficient number, since it is larger than the sum of its proper divisors (1028069436303).

1260502440561 is a wasteful number, since it uses less digits than its factorization.

1260502440561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32746350 (or 32746347 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 1260502440561 in words is "one trillion, two hundred sixty billion, five hundred two million, four hundred forty thousand, five hundred sixty-one".