61680619248 has 20 divisors (see below), whose sum is σ = 159341599848. Its totient is φ = 20560206400.

The previous prime is 61680619243. The next prime is 61680619271. The reversal of 61680619248 is 84291608616.

It is a self number, because there is not a number n which added to its sum of digits gives 61680619248.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61680619243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642506403 + ... + 642506498.

Almost surely, 2^61680619248 is an apocalyptic number.

It is an amenable number.

61680619248 is an abundant number, since it is smaller than the sum of its proper divisors (97660980600).

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

61680619248 is a wasteful number, since it uses less digits than its factorization.

61680619248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285012912 (or 1285012906 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 51.

The spelling of 61680619248 in words is "sixty-one billion, six hundred eighty million, six hundred nineteen thousand, two hundred forty-eight".