61650043796880 has 960 divisors, whose sum is σ = 270343956879360. Its totient is φ = 12769132723200.

The previous prime is 61650043796849. The next prime is 61650043796881. The reversal of 61650043796880 is 8869734005616.

61650043796880 is a `hidden beast` number, since 6 + 1 + 6 + 500 + 4 + 37 + 96 + 8 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (61650043796881) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 361993507 + ... + 362163773.

It is an arithmetic number, because the mean of its divisors is an integer number (281608288416).

Almost surely, 2^{61650043796880} is an apocalyptic number.

61650043796880 is a gapful number since it is divisible by the number (60) 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 61650043796880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135171978439680).

61650043796880 is an abundant number, since it is smaller than the sum of its proper divisors (208693913082480).

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

61650043796880 is a wasteful number, since it uses less digits than its factorization.

61650043796880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170625 (or 170606 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 61650043796880 in words is "sixty-one trillion, six hundred fifty billion, forty-three million, seven hundred ninety-six thousand, eight hundred eighty".