61531705676 has 24 divisors (see below), whose sum is σ = 123068687616. Its totient is φ = 26369600400.

The previous prime is 61531705667. The next prime is 61531705679. The reversal of 61531705676 is 67650713516.

It is a self number, because there is not a number n which added to its sum of digits gives 61531705676.

It is not an unprimeable number, because it can be changed into a prime (61531705679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1162745 + ... + 1214511.

It is an arithmetic number, because the mean of its divisors is an integer number (5127861984).

Almost surely, 2^61531705676 is an apocalyptic number.

It is an amenable number.

61531705676 is an abundant number, since it is smaller than the sum of its proper divisors (61536981940).

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

61531705676 is a wasteful number, since it uses less digits than its factorization.

61531705676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94229 (or 94227 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 47.

The spelling of 61531705676 in words is "sixty-one billion, five hundred thirty-one million, seven hundred five thousand, six hundred seventy-six".