61487386500 has 96 divisors (see below), whose sum is σ = 179296790400. Its totient is φ = 16374153600.

The previous prime is 61487386483. The next prime is 61487386501. The reversal of 61487386500 is 568378416.

61487386500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 61487386500.

It is not an unprimeable number, because it can be changed into a prime (61487386501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1080766 + ... + 1136234.

It is an arithmetic number, because the mean of its divisors is an integer number (1867674900).

Almost surely, 2^61487386500 is an apocalyptic number.

61487386500 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 61487386500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89648395200).

61487386500 is an abundant number, since it is smaller than the sum of its proper divisors (117809403900).

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

61487386500 is a wasteful number, since it uses less digits than its factorization.

61487386500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56230 (or 56218 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 61487386500 in words is "sixty-one billion, four hundred eighty-seven million, three hundred eighty-six thousand, five hundred".