61979685706 has 8 divisors (see below), whose sum is σ = 93305159460. Its totient is φ = 30877965888.

The previous prime is 61979685629. The next prime is 61979685799. The reversal of 61979685706 is 60758697916.

It can be written as a sum of positive squares in 2 ways, for example, as 60634630081 + 1345055625 = 246241^2 + 36675^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55937791 + ... + 55938898.

Almost surely, 2^61979685706 is an apocalyptic number.

61979685706 is a deficient number, since it is larger than the sum of its proper divisors (31325473754).

61979685706 is a wasteful number, since it uses less digits than its factorization.

61979685706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111876968.

The product of its (nonzero) digits is 34292160, while the sum is 64.

The spelling of 61979685706 in words is "sixty-one billion, nine hundred seventy-nine million, six hundred eighty-five thousand, seven hundred six".