75665378307137 has 4 divisors (see below), whose sum is σ = 76372531375536. Its totient is φ = 74958225238740.

The previous prime is 75665378307131. The next prime is 75665378307149. The reversal of 75665378307137 is 73170387356657.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 75665378307137 - 2⁶ = 75665378307073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75665378307131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353576534039 + ... + 353576534252.

It is an arithmetic number, because the mean of its divisors is an integer number (19093132843884).

Almost surely, 2^{75665378307137} is an apocalyptic number.

It is an amenable number.

75665378307137 is a deficient number, since it is larger than the sum of its proper divisors (707153068399).

75665378307137 is a wasteful number, since it uses less digits than its factorization.

75665378307137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707153068398.

The product of its (nonzero) digits is 466754400, while the sum is 68.

The spelling of 75665378307137 in words is "seventy-five trillion, six hundred sixty-five billion, three hundred seventy-eight million, three hundred seven thousand, one hundred thirty-seven".