61755760804 has 24 divisors (see below), whose sum is σ = 114441034680. Its totient is φ = 29058679296.

The previous prime is 61755760733. The next prime is 61755760883. The reversal of 61755760804 is 40806755716.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15203383204 + 46552377600 = 123302^2 + 215760^2 .

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, 758002 + ... + 835510.

It is an arithmetic number, because the mean of its divisors is an integer number (4768376445).

Almost surely, 2^61755760804 is an apocalyptic number.

It is an amenable number.

61755760804 is a deficient number, since it is larger than the sum of its proper divisors (52685273876).

61755760804 is a wasteful number, since it uses less digits than its factorization.

61755760804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89247 (or 89245 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 49.

The spelling of 61755760804 in words is "sixty-one billion, seven hundred fifty-five million, seven hundred sixty thousand, eight hundred four".