75851623508 has 6 divisors (see below), whose sum is σ = 132740341146. Its totient is φ = 37925811752.

The previous prime is 75851623481. The next prime is 75851623511. The reversal of 75851623508 is 80532615857.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 58977093904 + 16874529604 = 242852^2 + 129902^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9481452935 + ... + 9481452942.

It is an arithmetic number, because the mean of its divisors is an integer number (22123390191).

Almost surely, 2^75851623508 is an apocalyptic number.

It is an amenable number.

75851623508 is a deficient number, since it is larger than the sum of its proper divisors (56888717638).

75851623508 is a wasteful number, since it uses less digits than its factorization.

75851623508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18962905881 (or 18962905879 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 50.

The spelling of 75851623508 in words is "seventy-five billion, eight hundred fifty-one million, six hundred twenty-three thousand, five hundred eight".