61615560101138 has 16 divisors (see below), whose sum is σ = 94393857147264. Its totient is φ = 30150997482000.

The previous prime is 61615560101129. The next prime is 61615560101167. The reversal of 61615560101138 is 83110106551616.

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, 11910245 + ... + 16281432.

It is an arithmetic number, because the mean of its divisors is an integer number (5899616071704).

Almost surely, 2^{61615560101138} is an apocalyptic number.

61615560101138 is a deficient number, since it is larger than the sum of its proper divisors (32778297046126).

61615560101138 is a wasteful number, since it uses less digits than its factorization.

61615560101138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28214977.

The product of its (nonzero) digits is 129600, while the sum is 44.

The spelling of 61615560101138 in words is "sixty-one trillion, six hundred fifteen billion, five hundred sixty million, one hundred one thousand, one hundred thirty-eight".