138888767537462 has 4 divisors (see below), whose sum is σ = 208333151306196. Its totient is φ = 69444383768730.

The previous prime is 138888767537461. The next prime is 138888767537467. The reversal of 138888767537462 is 264735767888831.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138888767537461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34722191884364 + ... + 34722191884367.

It is an arithmetic number, because the mean of its divisors is an integer number (52083287826549).

Almost surely, 2^{138888767537462} is an apocalyptic number.

138888767537462 is a deficient number, since it is larger than the sum of its proper divisors (69444383768734).

138888767537462 is an equidigital number, since it uses as much as digits as its factorization.

138888767537462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69444383768733.

The product of its digits is 18207866880, while the sum is 83.

The spelling of 138888767537462 in words is "one hundred thirty-eight trillion, eight hundred eighty-eight billion, seven hundred sixty-seven million, five hundred thirty-seven thousand, four hundred sixty-two".