746826971521 has 2 divisors, whose sum is σ = 746826971522. Its totient is φ = 746826971520.

The previous prime is 746826971441. The next prime is 746826971533. The reversal of 746826971521 is 125179628647.

746826971521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 577659281521 + 169167690000 = 760039^2 + 411300^2 .

It is a cyclic number.

It is not a de Polignac number, because 746826971521 - 2¹⁹ = 746826447233 is a prime.

It is not a weakly prime, because it can be changed into another prime (746826971581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373413485760 + 373413485761.

It is an arithmetic number, because the mean of its divisors is an integer number (373413485761).

Almost surely, 2^746826971521 is an apocalyptic number.

It is an amenable number.

746826971521 is a deficient number, since it is larger than the sum of its proper divisors (1).

746826971521 is an equidigital number, since it uses as much as digits as its factorization.

746826971521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10160640, while the sum is 58.

The spelling of 746826971521 in words is "seven hundred forty-six billion, eight hundred twenty-six million, nine hundred seventy-one thousand, five hundred twenty-one".