138223053615673 has 24 divisors (see below), whose sum is σ = 153877029846336. Its totient is φ = 124014263630400.

The previous prime is 138223053615641. The next prime is 138223053615701. The reversal of 138223053615673 is 376516350322831.

It is not a de Polignac number, because 138223053615673 - 2⁵ = 138223053615641 is a prime.

It is a super-2 number, since 2×138223053615673² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138223053615173) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5310973 + ... + 17454298.

It is an arithmetic number, because the mean of its divisors is an integer number (6411542910264).

Almost surely, 2^{138223053615673} is an apocalyptic number.

138223053615673 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

138223053615673 is a deficient number, since it is larger than the sum of its proper divisors (15653976230663).

138223053615673 is a wasteful number, since it uses less digits than its factorization.

138223053615673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22766305 (or 22766292 counting only the distinct ones).

The product of its (nonzero) digits is 16329600, while the sum is 55.

The spelling of 138223053615673 in words is "one hundred thirty-eight trillion, two hundred twenty-three billion, fifty-three million, six hundred fifteen thousand, six hundred seventy-three".