133566765744 has 40 divisors (see below), whose sum is σ = 363207874240. Its totient is φ = 42178978368.

The previous prime is 133566765737. The next prime is 133566765749. The reversal of 133566765744 is 447567665331.

It is a super-2 number, since 2×133566765744² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (133566765749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73226482 + ... + 73228305.

It is an arithmetic number, because the mean of its divisors is an integer number (9080196856).

Almost surely, 2^133566765744 is an apocalyptic number.

It is an amenable number.

133566765744 is an abundant number, since it is smaller than the sum of its proper divisors (229641108496).

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

133566765744 is a wasteful number, since it uses less digits than its factorization.

133566765744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146454817 (or 146454811 counting only the distinct ones).

The product of its digits is 38102400, while the sum is 57.

The spelling of 133566765744 in words is "one hundred thirty-three billion, five hundred sixty-six million, seven hundred sixty-five thousand, seven hundred forty-four".