61067081790 has 320 divisors, whose sum is σ = 198137016000. Its totient is φ = 13295093760.

The previous prime is 61067081771. The next prime is 61067081807. The reversal of 61067081790 is 9718076016.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 4278586 + ... + 4292834.

It is an arithmetic number, because the mean of its divisors is an integer number (619178175).

Almost surely, 2^61067081790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61067081790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99068508000).

61067081790 is an abundant number, since it is smaller than the sum of its proper divisors (137069934210).

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

61067081790 is a wasteful number, since it uses less digits than its factorization.

61067081790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14329 (or 14320 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 61067081790 in words is "sixty-one billion, sixty-seven million, eighty-one thousand, seven hundred ninety".