61809763532 has 72 divisors (see below), whose sum is σ = 121077667200. Its totient is φ = 27581241600.

The previous prime is 61809763517. The next prime is 61809763567. The reversal of 61809763532 is 23536790816.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17919344 + ... + 17922792.

Almost surely, 2^61809763532 is an apocalyptic number.

It is an amenable number.

61809763532 is a deficient number, since it is larger than the sum of its proper divisors (59267903668).

61809763532 is a wasteful number, since it uses less digits than its factorization.

61809763532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4143 (or 4130 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 50.

The spelling of 61809763532 in words is "sixty-one billion, eight hundred nine million, seven hundred sixty-three thousand, five hundred thirty-two".