61758886662 has 144 divisors (see below), whose sum is σ = 155992178160. Its totient is φ = 17584680960.

The previous prime is 61758886633. The next prime is 61758886667. The reversal of 61758886662 is 26668885716.

It is a self number, because there is not a number n which added to its sum of digits gives 61758886662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61758886667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 32693014 + ... + 32694902.

It is an arithmetic number, because the mean of its divisors is an integer number (1083279015).

Almost surely, 2^61758886662 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61758886662, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77996089080).

61758886662 is an abundant number, since it is smaller than the sum of its proper divisors (94233291498).

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

61758886662 is a wasteful number, since it uses less digits than its factorization.

61758886662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2819 (or 2805 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 63.

The spelling of 61758886662 in words is "sixty-one billion, seven hundred fifty-eight million, eight hundred eighty-six thousand, six hundred sixty-two".