61786943088 has 160 divisors (see below), whose sum is σ = 182251835136. Its totient is φ = 17868877824.

The previous prime is 61786943069. The next prime is 61786943129. The reversal of 61786943088 is 88034968716.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8769295 + ... + 8776337.

Almost surely, 2^61786943088 is an apocalyptic number.

61786943088 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61786943088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91125917568).

61786943088 is an abundant number, since it is smaller than the sum of its proper divisors (120464892048).

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

61786943088 is a wasteful number, since it uses less digits than its factorization.

61786943088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7911 (or 7905 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 60.

The spelling of 61786943088 in words is "sixty-one billion, seven hundred eighty-six million, nine hundred forty-three thousand, eighty-eight".