138167701172 has 6 divisors (see below), whose sum is σ = 241793477058. Its totient is φ = 69083850584.

The previous prime is 138167701169. The next prime is 138167701193. The reversal of 138167701172 is 271107761831.

It can be written as a sum of positive squares in only one way, i.e., 137556424996 + 611276176 = 370886^2 + 24724^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17270962643 + ... + 17270962650.

It is an arithmetic number, because the mean of its divisors is an integer number (40298912843).

Almost surely, 2^138167701172 is an apocalyptic number.

It is an amenable number.

138167701172 is a deficient number, since it is larger than the sum of its proper divisors (103625775886).

138167701172 is a wasteful number, since it uses less digits than its factorization.

138167701172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34541925297 (or 34541925295 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 44.

The spelling of 138167701172 in words is "one hundred thirty-eight billion, one hundred sixty-seven million, seven hundred one thousand, one hundred seventy-two".