749270466521 has 2 divisors, whose sum is σ = 749270466522. Its totient is φ = 749270466520.

The previous prime is 749270466499. The next prime is 749270466557. The reversal of 749270466521 is 125664072947.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 610290626521 + 138979840000 = 781211^2 + 372800^2 .

It is a cyclic number.

It is not a de Polignac number, because 749270466521 - 2¹⁸ = 749270204377 is a prime.

It is a super-2 number, since 2×749270466521² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (749270468521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374635233260 + 374635233261.

It is an arithmetic number, because the mean of its divisors is an integer number (374635233261).

Almost surely, 2^749270466521 is an apocalyptic number.

It is an amenable number.

749270466521 is a deficient number, since it is larger than the sum of its proper divisors (1).

749270466521 is an equidigital number, since it uses as much as digits as its factorization.

749270466521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 749270466521 in words is "seven hundred forty-nine billion, two hundred seventy million, four hundred sixty-six thousand, five hundred twenty-one".