61868375742 has 16 divisors (see below), whose sum is σ = 125833985280. Its totient is φ = 20273252952.

The previous prime is 61868375729. The next prime is 61868375747. The reversal of 61868375742 is 24757386816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61868375747) by changing a digit.

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, 87384358 + ... + 87385065.

It is an arithmetic number, because the mean of its divisors is an integer number (7864624080).

Almost surely, 2^61868375742 is an apocalyptic number.

61868375742 is an abundant number, since it is smaller than the sum of its proper divisors (63965609538).

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

61868375742 is a wasteful number, since it uses less digits than its factorization.

61868375742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174769487.

The product of its digits is 13547520, while the sum is 57.

The spelling of 61868375742 in words is "sixty-one billion, eight hundred sixty-eight million, three hundred seventy-five thousand, seven hundred forty-two".