138784401145635 has 32 divisors (see below), whose sum is σ = 254161119977472. Its totient is φ = 63348315338880.

The previous prime is 138784401145603. The next prime is 138784401145657. The reversal of 138784401145635 is 536541104487831.

It is not a de Polignac number, because 138784401145635 - 2⁵ = 138784401145603 is a prime.

It is a super-2 number, since 2×138784401145635² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 999746179 + ... + 999884988.

It is an arithmetic number, because the mean of its divisors is an integer number (7942534999296).

Almost surely, 2^{138784401145635} is an apocalyptic number.

138784401145635 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138784401145635 is a deficient number, since it is larger than the sum of its proper divisors (115376718831837).

138784401145635 is a wasteful number, since it uses less digits than its factorization.

138784401145635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999631843.

The product of its (nonzero) digits is 38707200, while the sum is 60.

The spelling of 138784401145635 in words is "one hundred thirty-eight trillion, seven hundred eighty-four billion, four hundred one million, one hundred forty-five thousand, six hundred thirty-five".