61710771580 has 48 divisors (see below), whose sum is σ = 132387970176. Its totient is φ = 24152163840.

The previous prime is 61710771559. The next prime is 61710771583. The reversal of 61710771580 is 8517701716.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61710771583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4314040 + ... + 4328320.

It is an arithmetic number, because the mean of its divisors is an integer number (2758082712).

Almost surely, 2^61710771580 is an apocalyptic number.

It is an amenable number.

61710771580 is an abundant number, since it is smaller than the sum of its proper divisors (70677198596).

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

61710771580 is a wasteful number, since it uses less digits than its factorization.

61710771580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18934 (or 18932 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 43.

The spelling of 61710771580 in words is "sixty-one billion, seven hundred ten million, seven hundred seventy-one thousand, five hundred eighty".