43126525523 has 4 divisors (see below), whose sum is σ = 43136974440. Its totient is φ = 43116076608.

The previous prime is 43126525517. The next prime is 43126525529. The reversal of 43126525523 is 32552562134.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32552562134 = 2 ⋅16276281067.

It is an interprime number because it is at equal distance from previous prime (43126525517) and next prime (43126525529).

It is a cyclic number.

It is not a de Polignac number, because 43126525523 - 2⁶ = 43126525459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43126525529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5218265 + ... + 5226522.

It is an arithmetic number, because the mean of its divisors is an integer number (10784243610).

Almost surely, 2^43126525523 is an apocalyptic number.

43126525523 is a deficient number, since it is larger than the sum of its proper divisors (10448917).

43126525523 is a wasteful number, since it uses less digits than its factorization.

43126525523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10448916.

The product of its digits is 216000, while the sum is 38.

The spelling of 43126525523 in words is "forty-three billion, one hundred twenty-six million, five hundred twenty-five thousand, five hundred twenty-three".