61056987936 has 192 divisors, whose sum is σ = 193479745536. Its totient is φ = 16489267200.

The previous prime is 61056987899. The next prime is 61056987941. The reversal of 61056987936 is 63978965016.

61056987936 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 61056987936.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 861696 + ... + 929856.

It is an arithmetic number, because the mean of its divisors is an integer number (1007707008).

Almost surely, 2^61056987936 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 61056987936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96739872768).

61056987936 is an abundant number, since it is smaller than the sum of its proper divisors (132422757600).

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

61056987936 is a wasteful number, since it uses less digits than its factorization.

61056987936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68255 (or 68247 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 60.

The spelling of 61056987936 in words is "sixty-one billion, fifty-six million, nine hundred eighty-seven thousand, nine hundred thirty-six".