61010687808 has 560 divisors, whose sum is σ = 219868577280. Its totient is φ = 16340050944.

The previous prime is 61010687767. The next prime is 61010687819. The reversal of 61010687808 is 80878601016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 73773091 + ... + 73773917.

Almost surely, 2^61010687808 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 61010687808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109934288640).

61010687808 is an abundant number, since it is smaller than the sum of its proper divisors (158857889472).

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

61010687808 is a wasteful number, since it uses less digits than its factorization.

61010687808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984 (or 965 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The spelling of 61010687808 in words is "sixty-one billion, ten million, six hundred eighty-seven thousand, eight hundred eight".