133300388477 has 4 divisors (see below), whose sum is σ = 133534660380. Its totient is φ = 133066116576.

The previous prime is 133300388471. The next prime is 133300388489. The reversal of 133300388477 is 774883003331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44833404121 + 88466984356 = 211739^2 + 297434^2 .

It is a cyclic number.

It is not a de Polignac number, because 133300388477 - 2¹⁶ = 133300322941 is a prime.

It is a super-2 number, since 2×133300388477² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133300388471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117135098 + ... + 117136235.

It is an arithmetic number, because the mean of its divisors is an integer number (33383665095).

Almost surely, 2^133300388477 is an apocalyptic number.

It is an amenable number.

133300388477 is a deficient number, since it is larger than the sum of its proper divisors (234271903).

133300388477 is an equidigital number, since it uses as much as digits as its factorization.

133300388477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234271902.

The product of its (nonzero) digits is 1016064, while the sum is 47.

The spelling of 133300388477 in words is "one hundred thirty-three billion, three hundred million, three hundred eighty-eight thousand, four hundred seventy-seven".