138802391285762 has 4 divisors (see below), whose sum is σ = 208203586928646. Its totient is φ = 69401195642880.

The previous prime is 138802391285693. The next prime is 138802391285771. The reversal of 138802391285762 is 267582193208831.

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

It can be written as a sum of positive squares in only one way, i.e., 95680461526321 + 43121929759441 = 9781639^2 + 6566729^2 .

It is a super-2 number, since 2×138802391285762² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34700597821439 + ... + 34700597821442.

Almost surely, 2^{138802391285762} is an apocalyptic number.

138802391285762 is a deficient number, since it is larger than the sum of its proper divisors (69401195642884).

138802391285762 is an equidigital number, since it uses as much as digits as its factorization.

138802391285762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69401195642883.

The product of its (nonzero) digits is 69672960, while the sum is 65.

The spelling of 138802391285762 in words is "one hundred thirty-eight trillion, eight hundred two billion, three hundred ninety-one million, two hundred eighty-five thousand, seven hundred sixty-two".