1561061270830 has 8 divisors (see below), whose sum is σ = 2809910287512. Its totient is φ = 624424508328.

The previous prime is 1561061270827. The next prime is 1561061270891. The reversal of 1561061270830 is 380721601651.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78053063532 + ... + 78053063551.

It is an arithmetic number, because the mean of its divisors is an integer number (351238785939).

Almost surely, 2^{1561061270830} is an apocalyptic number.

1561061270830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1561061270830 is a deficient number, since it is larger than the sum of its proper divisors (1248849016682).

1561061270830 is a wasteful number, since it uses less digits than its factorization.

1561061270830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156106127090.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 1561061270830 in words is "one trillion, five hundred sixty-one billion, sixty-one million, two hundred seventy thousand, eight hundred thirty".