61994160270 has 256 divisors, whose sum is σ = 200459059200. Its totient is φ = 13309194240.

The previous prime is 61994160247. The next prime is 61994160299. The reversal of 61994160270 is 7206149916.

61994160270 is a `hidden beast` number, since 619 + 9 + 4 + 1 + 6 + 0 + 27 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 18280275 + ... + 18283665.

It is an arithmetic number, because the mean of its divisors is an integer number (783043200).

Almost surely, 2^61994160270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61994160270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100229529600).

61994160270 is an abundant number, since it is smaller than the sum of its proper divisors (138464898930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61994160270 is a wasteful number, since it uses less digits than its factorization.

61994160270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4000 (or 3994 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 61994160270 in words is "sixty-one billion, nine hundred ninety-four million, one hundred sixty thousand, two hundred seventy".