43157851145 has 4 divisors (see below), whose sum is σ = 51789421380. Its totient is φ = 34526280912.

The previous prime is 43157851141. The next prime is 43157851171. The reversal of 43157851145 is 54115875134.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7607502841 + 35550348304 = 87221^2 + 188548^2 .

It is a cyclic number.

It is not a de Polignac number, because 43157851145 - 2² = 43157851141 is a prime.

It is a super-2 number, since 2×43157851145² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43157851096 and 43157851105.

It is not an unprimeable number, because it can be changed into a prime (43157851141) 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, 4315785110 + ... + 4315785119.

It is an arithmetic number, because the mean of its divisors is an integer number (12947355345).

Almost surely, 2^43157851145 is an apocalyptic number.

It is an amenable number.

43157851145 is a deficient number, since it is larger than the sum of its proper divisors (8631570235).

43157851145 is an equidigital number, since it uses as much as digits as its factorization.

43157851145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8631570234.

The product of its digits is 336000, while the sum is 44.

The spelling of 43157851145 in words is "forty-three billion, one hundred fifty-seven million, eight hundred fifty-one thousand, one hundred forty-five".