61164705760 has 48 divisors (see below), whose sum is σ = 152106973200. Its totient is φ = 23178203136.

The previous prime is 61164705751. The next prime is 61164705829. The reversal of 61164705760 is 6750746116.

It is a super-2 number, since 2×61164705760² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 10056945 + ... + 10063024.

It is an arithmetic number, because the mean of its divisors is an integer number (3168895275).

Almost surely, 2^61164705760 is an apocalyptic number.

It is an amenable number.

61164705760 is an abundant number, since it is smaller than the sum of its proper divisors (90942267440).

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

61164705760 is a wasteful number, since it uses less digits than its factorization.

61164705760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20120003 (or 20119995 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 61164705760 in words is "sixty-one billion, one hundred sixty-four million, seven hundred five thousand, seven hundred sixty".