61680336808 has 32 divisors (see below), whose sum is σ = 116734860000. Its totient is φ = 30552137280.

The previous prime is 61680336799. The next prime is 61680336811. The reversal of 61680336808 is 80863308616.

It is a happy number.

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, 383503 + ... + 520033.

It is an arithmetic number, because the mean of its divisors is an integer number (3647964375).

Almost surely, 2^61680336808 is an apocalyptic number.

It is an amenable number.

61680336808 is a deficient number, since it is larger than the sum of its proper divisors (55054523192).

61680336808 is a wasteful number, since it uses less digits than its factorization.

61680336808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137065 (or 137061 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 49.

The spelling of 61680336808 in words is "sixty-one billion, six hundred eighty million, three hundred thirty-six thousand, eight hundred eight".