61506647016 has 16 divisors (see below), whose sum is σ = 153766617600. Its totient is φ = 20502215664.

The previous prime is 61506647011. The next prime is 61506647047. The reversal of 61506647016 is 61074660516.

It is a happy number.

61506647016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (61506647011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1281388456 + ... + 1281388503.

It is an arithmetic number, because the mean of its divisors is an integer number (9610413600).

Almost surely, 2^61506647016 is an apocalyptic number.

It is an amenable number.

61506647016 is an abundant number, since it is smaller than the sum of its proper divisors (92259970584).

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

61506647016 is a wasteful number, since it uses less digits than its factorization.

61506647016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2562776968 (or 2562776964 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 61506647016 in words is "sixty-one billion, five hundred six million, six hundred forty-seven thousand, sixteen".