61569180460 has 12 divisors (see below), whose sum is σ = 129295279008. Its totient is φ = 24627672176.

The previous prime is 61569180457. The next prime is 61569180469. The reversal of 61569180460 is 6408196516.

It is a self number, because there is not a number n which added to its sum of digits gives 61569180460.

It is not an unprimeable number, because it can be changed into a prime (61569180469) 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, 1539229492 + ... + 1539229531.

It is an arithmetic number, because the mean of its divisors is an integer number (10774606584).

Almost surely, 2^61569180460 is an apocalyptic number.

It is an amenable number.

61569180460 is an abundant number, since it is smaller than the sum of its proper divisors (67726098548).

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

61569180460 is a wasteful number, since it uses less digits than its factorization.

61569180460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3078459032 (or 3078459030 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 61569180460 in words is "sixty-one billion, five hundred sixty-nine million, one hundred eighty thousand, four hundred sixty".