75661740626 has 8 divisors (see below), whose sum is σ = 113515465980. Its totient is φ = 37823251968.

The previous prime is 75661740619. The next prime is 75661740629. The reversal of 75661740626 is 62604716657.

It can be written as a sum of positive squares in 2 ways, for example, as 72065939401 + 3595801225 = 268451^2 + 59965^2 .

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

It is not an unprimeable number, because it can be changed into a prime (75661740629) 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 3 ways as a sum of consecutive naturals, for example, 3796751 + ... + 3816626.

Almost surely, 2^75661740626 is an apocalyptic number.

75661740626 is a deficient number, since it is larger than the sum of its proper divisors (37853725354).

75661740626 is a wasteful number, since it uses less digits than its factorization.

75661740626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7618348.

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 75661740626 in words is "seventy-five billion, six hundred sixty-one million, seven hundred forty thousand, six hundred twenty-six".