61870691705 has 8 divisors (see below), whose sum is σ = 78152452800. Its totient is φ = 46891471536.

The previous prime is 61870691627. The next prime is 61870691717. The reversal of 61870691705 is 50719607816.

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

It is a cyclic number.

It is not a de Polignac number, because 61870691705 - 2¹² = 61870687609 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325635125 + ... + 325635314.

It is an arithmetic number, because the mean of its divisors is an integer number (9769056600).

Almost surely, 2^61870691705 is an apocalyptic number.

It is an amenable number.

61870691705 is a deficient number, since it is larger than the sum of its proper divisors (16281761095).

61870691705 is a wasteful number, since it uses less digits than its factorization.

61870691705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651270463.

The product of its (nonzero) digits is 635040, while the sum is 50.

The spelling of 61870691705 in words is "sixty-one billion, eight hundred seventy million, six hundred ninety-one thousand, seven hundred five".