1561061270982 has 8 divisors (see below), whose sum is σ = 3122122541976. Its totient is φ = 520353756992.

The previous prime is 1561061270981. The next prime is 1561061271023. The reversal of 1561061270982 is 2890721601651.

It is a happy number.

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

1561061270982 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1561061270981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130088439243 + ... + 130088439254.

It is an arithmetic number, because the mean of its divisors is an integer number (390265317747).

Almost surely, 2^{1561061270982} is an apocalyptic number.

1561061270982 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1561061270982 is a wasteful number, since it uses less digits than its factorization.

1561061270982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260176878502.

The product of its (nonzero) digits is 362880, while the sum is 48.

The spelling of 1561061270982 in words is "one trillion, five hundred sixty-one billion, sixty-one million, two hundred seventy thousand, nine hundred eighty-two".