75135956381 has 8 divisors (see below), whose sum is σ = 76145038200. Its totient is φ = 74130538240.

The previous prime is 75135956369. The next prime is 75135956417. The reversal of 75135956381 is 18365953157.

It can be written as a sum of positive squares in 4 ways, for example, as 194156356 + 74941800025 = 13934^2 + 273755^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 75135956381 - 2⁶ = 75135956317 is a prime.

It is a super-2 number, since 2×75135956381² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75135953381) 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, 874616 + ... + 956673.

It is an arithmetic number, because the mean of its divisors is an integer number (9518129775).

Almost surely, 2^75135956381 is an apocalyptic number.

It is an amenable number.

75135956381 is a deficient number, since it is larger than the sum of its proper divisors (1009081819).

75135956381 is a wasteful number, since it uses less digits than its factorization.

75135956381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831839.

The product of its digits is 3402000, while the sum is 53.

The spelling of 75135956381 in words is "seventy-five billion, one hundred thirty-five million, nine hundred fifty-six thousand, three hundred eighty-one".