746123321646 has 64 divisors (see below), whose sum is σ = 1686484800000. Its totient is φ = 244444481856.

The previous prime is 746123321617. The next prime is 746123321653. The reversal of 746123321646 is 646123321647.

746123321646 is a `hidden beast` number, since 7 + 4 + 612 + 3 + 3 + 21 + 6 + 4 + 6 = 666.

746123321646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×746123321646² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18614895 + ... + 18654933.

It is an arithmetic number, because the mean of its divisors is an integer number (26351325000).

Almost surely, 2^746123321646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 746123321646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (843242400000).

746123321646 is an abundant number, since it is smaller than the sum of its proper divisors (940361478354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

746123321646 is a wasteful number, since it uses less digits than its factorization.

746123321646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45958 (or 45952 counting only the distinct ones).

The product of its digits is 870912, while the sum is 45.

Subtracting from 746123321646 its reverse (646123321647), we obtain a palindrome (99999999999).

The spelling of 746123321646 in words is "seven hundred forty-six billion, one hundred twenty-three million, three hundred twenty-one thousand, six hundred forty-six".