1561785013330 has 16 divisors (see below), whose sum is σ = 2833348561920. Its totient is φ = 619794996912.

The previous prime is 1561785013307. The next prime is 1561785013331. The reversal of 1561785013330 is 333105871651.

It is not an unprimeable number, because it can be changed into a prime (1561785013331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 614874720 + ... + 614877259.

It is an arithmetic number, because the mean of its divisors is an integer number (177084285120).

Almost surely, 2^{1561785013330} is an apocalyptic number.

1561785013330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1561785013330 is a deficient number, since it is larger than the sum of its proper divisors (1271563548590).

1561785013330 is a wasteful number, since it uses less digits than its factorization.

1561785013330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229752113.

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 1561785013330 in words is "one trillion, five hundred sixty-one billion, seven hundred eighty-five million, thirteen thousand, three hundred thirty".