133993439477 has 2 divisors, whose sum is σ = 133993439478. Its totient is φ = 133993439476.

The previous prime is 133993439471. The next prime is 133993439497. The reversal of 133993439477 is 774934399331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128285032561 + 5708406916 = 358169^2 + 75554^2 .

It is a cyclic number.

It is not a de Polignac number, because 133993439477 - 2⁶ = 133993439413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133993439471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66996719738 + 66996719739.

It is an arithmetic number, because the mean of its divisors is an integer number (66996719739).

Almost surely, 2^133993439477 is an apocalyptic number.

It is an amenable number.

133993439477 is a deficient number, since it is larger than the sum of its proper divisors (1).

133993439477 is an equidigital number, since it uses as much as digits as its factorization.

133993439477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46294416, while the sum is 62.

The spelling of 133993439477 in words is "one hundred thirty-three billion, nine hundred ninety-three million, four hundred thirty-nine thousand, four hundred seventy-seven".