1561061270824 has 32 divisors (see below), whose sum is σ = 3261017750400. Its totient is φ = 694475998720.

The previous prime is 1561061270767. The next prime is 1561061270827. The reversal of 1561061270824 is 4280721601651.

It is not an unprimeable number, because it can be changed into a prime (1561061270827) 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, 188712169 + ... + 188720440.

It is an arithmetic number, because the mean of its divisors is an integer number (101906804700).

Almost surely, 2^{1561061270824} is an apocalyptic number.

It is an amenable number.

1561061270824 is an abundant number, since it is smaller than the sum of its proper divisors (1699956479576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1561061270824 is a wasteful number, since it uses less digits than its factorization.

1561061270824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377432673 (or 377432669 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 1561061270824 in words is "one trillion, five hundred sixty-one billion, sixty-one million, two hundred seventy thousand, eight hundred twenty-four".