75996261281 has 4 divisors (see below), whose sum is σ = 75996813312. Its totient is φ = 75995709252.

The previous prime is 75996261251. The next prime is 75996261293. The reversal of 75996261281 is 18216269957.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 75996261281 - 2¹⁰ = 75996260257 is a prime.

It is a super-2 number, since 2×75996261281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75996261251) 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, 117440 + ... + 407166.

It is an arithmetic number, because the mean of its divisors is an integer number (18999203328).

Almost surely, 2^75996261281 is an apocalyptic number.

It is an amenable number.

75996261281 is a deficient number, since it is larger than the sum of its proper divisors (552031).

75996261281 is a wasteful number, since it uses less digits than its factorization.

75996261281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552030.

The product of its digits is 3265920, while the sum is 56.

The spelling of 75996261281 in words is "seventy-five billion, nine hundred ninety-six million, two hundred sixty-one thousand, two hundred eighty-one".