61385186770 has 8 divisors (see below), whose sum is σ = 110493336204. Its totient is φ = 24554074704.

The previous prime is 61385186713. The next prime is 61385186789. The reversal of 61385186770 is 7768158316.

It can be written as a sum of positive squares in 2 ways, for example, as 61242885729 + 142301041 = 247473^2 + 11929^2 .

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, 3069259329 + ... + 3069259348.

Almost surely, 2^61385186770 is an apocalyptic number.

61385186770 is a deficient number, since it is larger than the sum of its proper divisors (49108149434).

61385186770 is a wasteful number, since it uses less digits than its factorization.

61385186770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6138518684.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 61385186770 in words is "sixty-one billion, three hundred eighty-five million, one hundred eighty-six thousand, seven hundred seventy".