138877481864433 has 8 divisors (see below), whose sum is σ = 199413820113088. Its totient is φ = 85463065762704.

The previous prime is 138877481864419. The next prime is 138877481864477. The reversal of 138877481864433 is 334468184778831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138877481864433 - 2⁹ = 138877481863921 is a prime.

It is a super-2 number, since 2×138877481864433² (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 (138877481864633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1780480536685 + ... + 1780480536762.

It is an arithmetic number, because the mean of its divisors is an integer number (24926727514136).

Almost surely, 2^{138877481864433} is an apocalyptic number.

138877481864433 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

138877481864433 is a deficient number, since it is larger than the sum of its proper divisors (60536338248655).

138877481864433 is a wasteful number, since it uses less digits than its factorization.

138877481864433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3560961073463.

The product of its digits is 2080899072, while the sum is 75.

The spelling of 138877481864433 in words is "one hundred thirty-eight trillion, eight hundred seventy-seven billion, four hundred eighty-one million, eight hundred sixty-four thousand, four hundred thirty-three".