61888842880 has 128 divisors (see below), whose sum is σ = 156184848000. Its totient is φ = 23385636864.

The previous prime is 61888842859. The next prime is 61888842919. The reversal of 61888842880 is 8824888816.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4358352 + ... + 4372528.

It is an arithmetic number, because the mean of its divisors is an integer number (1220194125).

Almost surely, 2^61888842880 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 61888842880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78092424000).

61888842880 is an abundant number, since it is smaller than the sum of its proper divisors (94296005120).

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

61888842880 is a wasteful number, since it uses less digits than its factorization.

61888842880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14574 (or 14562 counting only the distinct ones).

The product of its (nonzero) digits is 12582912, while the sum is 61.

The spelling of 61888842880 in words is "sixty-one billion, eight hundred eighty-eight million, eight hundred forty-two thousand, eight hundred eighty".