43572222043537 has 4 divisors (see below), whose sum is σ = 47533333138416. Its totient is φ = 39611110948660.

The previous prime is 43572222043463. The next prime is 43572222043541. The reversal of 43572222043537 is 73534022227534.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43572222043537 is a prime.

It is a super-2 number, since 2×43572222043537² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43572222040537) 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, 1980555547423 + ... + 1980555547444.

It is an arithmetic number, because the mean of its divisors is an integer number (11883333284604).

Almost surely, 2^{43572222043537} is an apocalyptic number.

It is an amenable number.

43572222043537 is a deficient number, since it is larger than the sum of its proper divisors (3961111094879).

43572222043537 is a wasteful number, since it uses less digits than its factorization.

43572222043537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3961111094878.

The product of its (nonzero) digits is 8467200, while the sum is 49.

The spelling of 43572222043537 in words is "forty-three trillion, five hundred seventy-two billion, two hundred twenty-two million, forty-three thousand, five hundred thirty-seven".