138586227400 has 24 divisors (see below), whose sum is σ = 322212979170. Its totient is φ = 55434490880.

The previous prime is 138586227379. The next prime is 138586227401. The reversal of 138586227400 is 4722685831.

It can be written as a sum of positive squares in 3 ways, for example, as 84521607076 + 54064620324 = 290726^2 + 232518^2 .

It is a super-2 number, since 2×138586227400² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138586227401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 346465369 + ... + 346465768.

Almost surely, 2^138586227400 is an apocalyptic number.

138586227400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138586227400 is an abundant number, since it is smaller than the sum of its proper divisors (183626751770).

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

138586227400 is a wasteful number, since it uses less digits than its factorization.

138586227400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692931153 (or 692931144 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 138586227400 in words is "one hundred thirty-eight billion, five hundred eighty-six million, two hundred twenty-seven thousand, four hundred".