775632531505231 has 8 divisors (see below), whose sum is σ = 791298905826960. Its totient is φ = 760050159191232.

The previous prime is 775632531505229. The next prime is 775632531505253. The reversal of 775632531505231 is 132505135236577.

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 775632531505231 - 2¹ = 775632531505229 is a prime.

It is a super-2 number, since 2×775632531505231² (a number of 31 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 (775632531500231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21000483280 + ... + 21000520213.

It is an arithmetic number, because the mean of its divisors is an integer number (98912363228370).

Almost surely, 2^{775632531505231} is an apocalyptic number.

775632531505231 is a deficient number, since it is larger than the sum of its proper divisors (15666374321729).

775632531505231 is a wasteful number, since it uses less digits than its factorization.

775632531505231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42001003865.

The product of its (nonzero) digits is 19845000, while the sum is 55.

The spelling of 775632531505231 in words is "seven hundred seventy-five trillion, six hundred thirty-two billion, five hundred thirty-one million, five hundred five thousand, two hundred thirty-one".