746647731121 has 2 divisors, whose sum is σ = 746647731122. Its totient is φ = 746647731120.

The previous prime is 746647731119. The next prime is 746647731127. The reversal of 746647731121 is 121137746647.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 586007091121 + 160640640000 = 765511^2 + 400800^2 .

It is a cyclic number.

It is not a de Polignac number, because 746647731121 - 2¹ = 746647731119 is a prime.

It is a super-2 number, since 2×746647731121² (a number of 25 digits) contains 22 as substring.

Together with 746647731119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (746647731127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373323865560 + 373323865561.

It is an arithmetic number, because the mean of its divisors is an integer number (373323865561).

Almost surely, 2^746647731121 is an apocalyptic number.

It is an amenable number.

746647731121 is a deficient number, since it is larger than the sum of its proper divisors (1).

746647731121 is an equidigital number, since it uses as much as digits as its factorization.

746647731121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1185408, while the sum is 49.

The spelling of 746647731121 in words is "seven hundred forty-six billion, six hundred forty-seven million, seven hundred thirty-one thousand, one hundred twenty-one".