1066747776400 has 120 divisors (see below), whose sum is σ = 2771355479040. Its totient is φ = 393054382080.

The previous prime is 1066747776377. The next prime is 1066747776431. The reversal of 1066747776400 is 46777476601.

It is a super-2 number, since 2×1066747776400² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1349280 + ... + 1988479.

It is an arithmetic number, because the mean of its divisors is an integer number (23094628992).

Almost surely, 2^{1066747776400} is an apocalyptic number.

1066747776400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1066747776400 is an abundant number, since it is smaller than the sum of its proper divisors (1704607702640).

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

1066747776400 is a wasteful number, since it uses less digits than its factorization.

1066747776400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3337841 (or 3337830 counting only the distinct ones).

The product of its (nonzero) digits is 8297856, while the sum is 55.

The spelling of 1066747776400 in words is "one trillion, sixty-six billion, seven hundred forty-seven million, seven hundred seventy-six thousand, four hundred".