138268269270 has 80 divisors (see below), whose sum is σ = 391355846640. Its totient is φ = 34930927296.

The previous prime is 138268269229. The next prime is 138268269299. The reversal of 138268269270 is 72962862831.

It is a super-2 number, since 2×138268269270² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4476757 + ... + 4507536.

It is an arithmetic number, because the mean of its divisors is an integer number (4891948083).

Almost surely, 2^138268269270 is an apocalyptic number.

138268269270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138268269270 is an abundant number, since it is smaller than the sum of its proper divisors (253087577370).

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

138268269270 is a wasteful number, since it uses less digits than its factorization.

138268269270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8984331 (or 8984322 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 138268269270 in words is "one hundred thirty-eight billion, two hundred sixty-eight million, two hundred sixty-nine thousand, two hundred seventy".