61338482064 has 40 divisors (see below), whose sum is σ = 176064162720. Its totient is φ = 20446160544.

The previous prime is 61338482057. The next prime is 61338482077. The reversal of 61338482064 is 46028483316.

61338482064 is a `hidden beast` number, since 61 + 3 + 384 + 8 + 206 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70993182 + ... + 70994045.

It is an arithmetic number, because the mean of its divisors is an integer number (4401604068).

Almost surely, 2^61338482064 is an apocalyptic number.

It is an amenable number.

61338482064 is an abundant number, since it is smaller than the sum of its proper divisors (114725680656).

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

61338482064 is a wasteful number, since it uses less digits than its factorization.

61338482064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141987244 (or 141987232 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 61338482064 in words is "sixty-one billion, three hundred thirty-eight million, four hundred eighty-two thousand, sixty-four".