138455902033 has 2 divisors, whose sum is σ = 138455902034. Its totient is φ = 138455902032.

The previous prime is 138455901973. The next prime is 138455902043. The reversal of 138455902033 is 330209554831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89887235344 + 48568666689 = 299812^2 + 220383^2 .

It is a cyclic number.

It is not a de Polignac number, because 138455902033 - 2²⁵ = 138422347601 is a prime.

It is not a weakly prime, because it can be changed into another prime (138455902043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69227951016 + 69227951017.

It is an arithmetic number, because the mean of its divisors is an integer number (69227951017).

Almost surely, 2^138455902033 is an apocalyptic number.

It is an amenable number.

138455902033 is a deficient number, since it is larger than the sum of its proper divisors (1).

138455902033 is an equidigital number, since it uses as much as digits as its factorization.

138455902033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 138455902033 in words is "one hundred thirty-eight billion, four hundred fifty-five million, nine hundred two thousand, thirty-three".