126805272438 has 96 divisors (see below), whose sum is σ = 280846893600. Its totient is φ = 37938447360.

The previous prime is 126805272437. The next prime is 126805272457. The reversal of 126805272438 is 834272508621.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126805272437) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25828728 + ... + 25833636.

It is an arithmetic number, because the mean of its divisors is an integer number (2925488475).

Almost surely, 2^126805272438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126805272438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140423446800).

126805272438 is an abundant number, since it is smaller than the sum of its proper divisors (154041621162).

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

126805272438 is a wasteful number, since it uses less digits than its factorization.

126805272438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5138 (or 5077 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 126805272438 in words is "one hundred twenty-six billion, eight hundred five million, two hundred seventy-two thousand, four hundred thirty-eight".