138802391285693 has 2 divisors, whose sum is σ = 138802391285694. Its totient is φ = 138802391285692.

The previous prime is 138802391285687. The next prime is 138802391285771. The reversal of 138802391285693 is 396582193208831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132897481565689 + 5904909720004 = 11528117^2 + 2430002^2 .

It is a cyclic number.

It is not a de Polignac number, because 138802391285693 - 2³⁶ = 138733671808957 is a prime.

It is a super-2 number, since 2×138802391285693² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138802391285093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69401195642846 + 69401195642847.

It is an arithmetic number, because the mean of its divisors is an integer number (69401195642847).

Almost surely, 2^{138802391285693} is an apocalyptic number.

It is an amenable number.

138802391285693 is a deficient number, since it is larger than the sum of its proper divisors (1).

138802391285693 is an equidigital number, since it uses as much as digits as its factorization.

138802391285693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 134369280, while the sum is 68.

The spelling of 138802391285693 in words is "one hundred thirty-eight trillion, eight hundred two billion, three hundred ninety-one million, two hundred eighty-five thousand, six hundred ninety-three".