61735778080 has 48 divisors (see below), whose sum is σ = 148322845440. Its totient is φ = 24275759872.

The previous prime is 61735778059. The next prime is 61735778099. The reversal of 61735778080 is 8087753716.

It is a super-2 number, since 2×61735778080² (a number of 22 digits) contains 22 as substring.

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, 3260464 + ... + 3279343.

It is an arithmetic number, because the mean of its divisors is an integer number (3090059280).

Almost surely, 2^61735778080 is an apocalyptic number.

It is an amenable number.

61735778080 is an abundant number, since it is smaller than the sum of its proper divisors (86587067360).

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

61735778080 is a wasteful number, since it uses less digits than its factorization.

61735778080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6539881 (or 6539873 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 52.

The spelling of 61735778080 in words is "sixty-one billion, seven hundred thirty-five million, seven hundred seventy-eight thousand, eighty".