754612931521 has 2 divisors, whose sum is σ = 754612931522. Its totient is φ = 754612931520.

The previous prime is 754612931519. The next prime is 754612931537. The reversal of 754612931521 is 125139216457.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 568734681025 + 185878250496 = 754145^2 + 431136^2 .

It is a cyclic number.

It is not a de Polignac number, because 754612931521 - 2¹ = 754612931519 is a prime.

Together with 754612931519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (754612931581) 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 as a sum of consecutive naturals, namely, 377306465760 + 377306465761.

It is an arithmetic number, because the mean of its divisors is an integer number (377306465761).

Almost surely, 2^754612931521 is an apocalyptic number.

It is an amenable number.

754612931521 is a deficient number, since it is larger than the sum of its proper divisors (1).

754612931521 is an equidigital number, since it uses as much as digits as its factorization.

754612931521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 46.

The spelling of 754612931521 in words is "seven hundred fifty-four billion, six hundred twelve million, nine hundred thirty-one thousand, five hundred twenty-one".