126206871438 has 16 divisors (see below), whose sum is σ = 267261610320. Its totient is φ = 39594312576.

The previous prime is 126206871367. The next prime is 126206871451. The reversal of 126206871438 is 834178602621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 618661033 + ... + 618661236.

It is an arithmetic number, because the mean of its divisors is an integer number (16703850645).

Almost surely, 2^126206871438 is an apocalyptic number.

126206871438 is an abundant number, since it is smaller than the sum of its proper divisors (141054738882).

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

126206871438 is a wasteful number, since it uses less digits than its factorization.

126206871438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237322291.

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 126206871438 in words is "one hundred twenty-six billion, two hundred six million, eight hundred seventy-one thousand, four hundred thirty-eight".