138185280336 has 40 divisors (see below), whose sum is σ = 357045188320. Its totient is φ = 46053173376.

The previous prime is 138185280323. The next prime is 138185280377. The reversal of 138185280336 is 633082581831.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 5515 + ... + 525738.

It is an arithmetic number, because the mean of its divisors is an integer number (8926129708).

Almost surely, 2^138185280336 is an apocalyptic number.

138185280336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138185280336 is an abundant number, since it is smaller than the sum of its proper divisors (218859907984).

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

138185280336 is a wasteful number, since it uses less digits than its factorization.

138185280336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536683 (or 536677 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 138185280336 in words is "one hundred thirty-eight billion, one hundred eighty-five million, two hundred eighty thousand, three hundred thirty-six".