30561061578436 has 27 divisors (see below), whose sum is σ = 53659348471533. Its totient is φ = 15229986401760.

The previous prime is 30561061578433. The next prime is 30561061578473. The reversal of 30561061578436 is 63487516016503.

The square root of 30561061578436 is 5528206.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 194966402500 + 30366095175936 = 441550^2 + 5510544^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30561061578433) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3460652541 + ... + 3460661371.

Almost surely, 2^{30561061578436} is an apocalyptic number.

30561061578436 is the 5528206-th square number.

It is an amenable number.

30561061578436 is a deficient number, since it is larger than the sum of its proper divisors (23098286893097).

30561061578436 is an frugal number, since it uses more digits than its factorization.

30561061578436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18292 (or 9146 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 55.

The spelling of 30561061578436 in words is "thirty trillion, five hundred sixty-one billion, sixty-one million, five hundred seventy-eight thousand, four hundred thirty-six".