138601400533 has 2 divisors, whose sum is σ = 138601400534. Its totient is φ = 138601400532.

The previous prime is 138601400521. The next prime is 138601400557. The reversal of 138601400533 is 335004106831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137505989124 + 1095411409 = 370818^2 + 33097^2 .

It is a cyclic number.

It is not a de Polignac number, because 138601400533 - 2⁵ = 138601400501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138601400593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69300700266 + 69300700267.

It is an arithmetic number, because the mean of its divisors is an integer number (69300700267).

Almost surely, 2^138601400533 is an apocalyptic number.

It is an amenable number.

138601400533 is a deficient number, since it is larger than the sum of its proper divisors (1).

138601400533 is an equidigital number, since it uses as much as digits as its factorization.

138601400533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 138601400533 in words is "one hundred thirty-eight billion, six hundred one million, four hundred thousand, five hundred thirty-three".