61266120576 has 32 divisors (see below), whose sum is σ = 162738133800. Its totient is φ = 20422040064.

The previous prime is 61266120569. The next prime is 61266120577. The reversal of 61266120576 is 67502166216.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61266120577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79773211 + ... + 79773978.

Almost surely, 2^61266120576 is an apocalyptic number.

It is an amenable number.

61266120576 is an abundant number, since it is smaller than the sum of its proper divisors (101472013224).

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

61266120576 is a wasteful number, since it uses less digits than its factorization.

61266120576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159547206 (or 159547194 counting only the distinct ones).

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

The spelling of 61266120576 in words is "sixty-one billion, two hundred sixty-six million, one hundred twenty thousand, five hundred seventy-six".