1561709930088 has 512 divisors, whose sum is σ = 5084533555200. Its totient is φ = 388065100800.

The previous prime is 1561709930083. The next prime is 1561709930107. The reversal of 1561709930088 is 8800399071651.

It is not an unprimeable number, because it can be changed into a prime (1561709930083) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 757008145 + ... + 757010207.

It is an arithmetic number, because the mean of its divisors is an integer number (9930729600).

Almost surely, 2^{1561709930088} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1561709930088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2542266777600).

1561709930088 is an abundant number, since it is smaller than the sum of its proper divisors (3522823625112).

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

1561709930088 is a wasteful number, since it uses less digits than its factorization.

1561709930088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2333 (or 2329 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 57.

The spelling of 1561709930088 in words is "one trillion, five hundred sixty-one billion, seven hundred nine million, nine hundred thirty thousand, eighty-eight".