43548972126 has 64 divisors (see below), whose sum is σ = 99639141120. Its totient is φ = 12567018240.

The previous prime is 43548972109. The next prime is 43548972149. The reversal of 43548972126 is 62127984534.

It is a super-2 number, since 2×43548972126² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16120 + ... + 295563.

It is an arithmetic number, because the mean of its divisors is an integer number (1556861580).

Almost surely, 2^43548972126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43548972126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49819570560).

43548972126 is an abundant number, since it is smaller than the sum of its proper divisors (56090168994).

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

43548972126 is a wasteful number, since it uses less digits than its factorization.

43548972126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311801.

The product of its digits is 2903040, while the sum is 51.

The spelling of 43548972126 in words is "forty-three billion, five hundred forty-eight million, nine hundred seventy-two thousand, one hundred twenty-six".