61715755000 has 80 divisors (see below), whose sum is σ = 144698994000. Its totient is φ = 24669408000.

The previous prime is 61715754977. The next prime is 61715755019. The reversal of 61715755000 is 55751716.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9391716 + ... + 9398284.

It is an arithmetic number, because the mean of its divisors is an integer number (1808737425).

Almost surely, 2^61715755000 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 61715755000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72349497000).

61715755000 is an abundant number, since it is smaller than the sum of its proper divisors (82983239000).

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

61715755000 is a wasteful number, since it uses less digits than its factorization.

61715755000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8474 (or 8455 counting only the distinct ones).

The product of its (nonzero) digits is 36750, while the sum is 37.

The spelling of 61715755000 in words is "sixty-one billion, seven hundred fifteen million, seven hundred fifty-five thousand".