75342477421257 has 8 divisors (see below), whose sum is σ = 100598324345280. Its totient is φ = 50157474389040.

The previous prime is 75342477421249. The next prime is 75342477421301. The reversal of 75342477421257 is 75212477424357.

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

It is not a de Polignac number, because 75342477421257 - 2³ = 75342477421249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75342477421257.

It is not an unprimeable number, because it can be changed into a prime (75342477421207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17710970469 + ... + 17710974722.

It is an arithmetic number, because the mean of its divisors is an integer number (12574790543160).

Almost surely, 2^{75342477421257} is an apocalyptic number.

It is an amenable number.

75342477421257 is a deficient number, since it is larger than the sum of its proper divisors (25255846924023).

75342477421257 is a wasteful number, since it uses less digits than its factorization.

75342477421257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35421945903.

The product of its digits is 92198400, while the sum is 60.

The spelling of 75342477421257 in words is "seventy-five trillion, three hundred forty-two billion, four hundred seventy-seven million, four hundred twenty-one thousand, two hundred fifty-seven".