138234427240736 has 12 divisors (see below), whose sum is σ = 272149028630262. Its totient is φ = 69117213620352.

The previous prime is 138234427240733. The next prime is 138234427240739. The reversal of 138234427240736 is 637042724432831.

It is an interprime number because it is at equal distance from previous prime (138234427240733) and next prime (138234427240739).

It can be written as a sum of positive squares in only one way, i.e., 137573100472336 + 661326768400 = 11729156^2 + 813220^2 .

It is not an unprimeable number, because it can be changed into a prime (138234427240733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2159912925605 + ... + 2159912925668.

Almost surely, 2^{138234427240736} is an apocalyptic number.

138234427240736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138234427240736 is a deficient number, since it is larger than the sum of its proper divisors (133914601389526).

138234427240736 is an equidigital number, since it uses as much as digits as its factorization.

138234427240736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4319825851283 (or 4319825851275 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 56.

The spelling of 138234427240736 in words is "one hundred thirty-eight trillion, two hundred thirty-four billion, four hundred twenty-seven million, two hundred forty thousand, seven hundred thirty-six".