138708545454 has 12 divisors (see below), whose sum is σ = 300535181856. Its totient is φ = 46236181812.

The previous prime is 138708545431. The next prime is 138708545483. The reversal of 138708545454 is 454545807831.

It is a happy number.

138708545454 is a `hidden beast` number, since 1 + 3 + 8 + 70 + 85 + 45 + 454 = 666.

It is a super-2 number, since 2×138708545454² (a number of 23 digits) contains 22 as substring.

138708545454 is a modest number, since divided by 545454 gives 138708 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 138708545454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3853015134 + ... + 3853015169.

It is an arithmetic number, because the mean of its divisors is an integer number (25044598488).

Almost surely, 2^138708545454 is an apocalyptic number.

138708545454 is an abundant number, since it is smaller than the sum of its proper divisors (161826636402).

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

138708545454 is a wasteful number, since it uses less digits than its factorization.

138708545454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7706030311 (or 7706030308 counting only the distinct ones).

The product of its (nonzero) digits is 10752000, while the sum is 54.

The spelling of 138708545454 in words is "one hundred thirty-eight billion, seven hundred eight million, five hundred forty-five thousand, four hundred fifty-four".