11743557728 has 48 divisors (see below), whose sum is σ = 26455603104. Its totient is φ = 5026744320.

The previous prime is 11743557713. The next prime is 11743557731. The reversal of 11743557728 is 82775534711.

It is a super-2 number, since 2×11743557728² (a number of 21 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 7 ways as a sum of consecutive naturals, for example, 151976 + ... + 215832.

It is an arithmetic number, because the mean of its divisors is an integer number (551158398).

Almost surely, 2^11743557728 is an apocalyptic number.

It is an amenable number.

11743557728 is an abundant number, since it is smaller than the sum of its proper divisors (14712045376).

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

11743557728 is an equidigital number, since it uses as much as digits as its factorization.

11743557728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64695 (or 64687 counting only the distinct ones).

The product of its digits is 1646400, while the sum is 50.

The spelling of 11743557728 in words is "eleven billion, seven hundred forty-three million, five hundred fifty-seven thousand, seven hundred twenty-eight".