138253473027 has 32 divisors (see below), whose sum is σ = 205409116160. Its totient is φ = 91904155200.

The previous prime is 138253473023. The next prime is 138253473053. The reversal of 138253473027 is 720374352831.

It is a happy number.

138253473027 is a `hidden beast` number, since 1 + 3 + 82 + 534 + 7 + 30 + 2 + 7 = 666.

It is not a de Polignac number, because 138253473027 - 2² = 138253473023 is a prime.

It is a super-2 number, since 2×138253473027² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138253473023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24070518 + ... + 24076260.

It is an arithmetic number, because the mean of its divisors is an integer number (6419034880).

Almost surely, 2^138253473027 is an apocalyptic number.

138253473027 is a deficient number, since it is larger than the sum of its proper divisors (67155643133).

138253473027 is a wasteful number, since it uses less digits than its factorization.

138253473027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8160 (or 8154 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The spelling of 138253473027 in words is "one hundred thirty-eight billion, two hundred fifty-three million, four hundred seventy-three thousand, twenty-seven".