61684260730 has 16 divisors (see below), whose sum is σ = 111066785280. Its totient is φ = 24665900752.

The previous prime is 61684260727. The next prime is 61684260749. The reversal of 61684260730 is 3706248616.

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, 942190 + ... + 1005529.

It is an arithmetic number, because the mean of its divisors is an integer number (6941674080).

Almost surely, 2^61684260730 is an apocalyptic number.

61684260730 is a deficient number, since it is larger than the sum of its proper divisors (49382524550).

61684260730 is a wasteful number, since it uses less digits than its factorization.

61684260730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950893.

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 61684260730 in words is "sixty-one billion, six hundred eighty-four million, two hundred sixty thousand, seven hundred thirty".