138497223711 has 32 divisors (see below), whose sum is σ = 230248908288. Its totient is φ = 71940435840.

The previous prime is 138497223701. The next prime is 138497223719. The reversal of 138497223711 is 117322794831.

It is not a de Polignac number, because 138497223711 - 2⁹ = 138497223199 is a prime.

It is a super-2 number, since 2×138497223711² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138497223719) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4103541 + ... + 4137153.

It is an arithmetic number, because the mean of its divisors is an integer number (7195278384).

Almost surely, 2^138497223711 is an apocalyptic number.

138497223711 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

138497223711 is a deficient number, since it is larger than the sum of its proper divisors (91751684577).

138497223711 is a wasteful number, since it uses less digits than its factorization.

138497223711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51471.

The product of its digits is 508032, while the sum is 48.

The spelling of 138497223711 in words is "one hundred thirty-eight billion, four hundred ninety-seven million, two hundred twenty-three thousand, seven hundred eleven".