139638970223971 has 2 divisors, whose sum is σ = 139638970223972. Its totient is φ = 139638970223970.

The previous prime is 139638970223959. The next prime is 139638970224037. The reversal of 139638970223971 is 179322079836931.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139638970223971 - 2²³ = 139638961835363 is a prime.

It is a super-2 number, since 2×139638970223971² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 139638970223971.

It is not a weakly prime, because it can be changed into another prime (139638970293971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69819485111985 + 69819485111986.

It is an arithmetic number, because the mean of its divisors is an integer number (69819485111986).

Almost surely, 2^{139638970223971} is an apocalyptic number.

139638970223971 is a deficient number, since it is larger than the sum of its proper divisors (1).

139638970223971 is an equidigital number, since it uses as much as digits as its factorization.

139638970223971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 185177664, while the sum is 70.

The spelling of 139638970223971 in words is "one hundred thirty-nine trillion, six hundred thirty-eight billion, nine hundred seventy million, two hundred twenty-three thousand, nine hundred seventy-one".