138211262652 has 24 divisors (see below), whose sum is σ = 322499221632. Its totient is φ = 46069524400.

The previous prime is 138211262633. The next prime is 138211262663. The reversal of 138211262652 is 256262112831.

It is a self number, because there is not a number n which added to its sum of digits gives 138211262652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 885577 + ... + 1029887.

It is an arithmetic number, because the mean of its divisors is an integer number (13437467568).

Almost surely, 2^138211262652 is an apocalyptic number.

138211262652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138211262652 is an abundant number, since it is smaller than the sum of its proper divisors (184287958980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138211262652 is a wasteful number, since it uses less digits than its factorization.

138211262652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224129 (or 224127 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The spelling of 138211262652 in words is "one hundred thirty-eight billion, two hundred eleven million, two hundred sixty-two thousand, six hundred fifty-two".