43540043002 has 4 divisors (see below), whose sum is σ = 65310064506. Its totient is φ = 21770021500.

The previous prime is 43540042999. The next prime is 43540043033. The reversal of 43540043002 is 20034004534.

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

It can be written as a sum of positive squares in only one way, i.e., 40481842401 + 3058200601 = 201201^2 + 55301^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10885010749 + ... + 10885010752.

Almost surely, 2^43540043002 is an apocalyptic number.

43540043002 is a deficient number, since it is larger than the sum of its proper divisors (21770021504).

43540043002 is a wasteful number, since it uses less digits than its factorization.

43540043002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21770021503.

The product of its (nonzero) digits is 5760, while the sum is 25.

Adding to 43540043002 its reverse (20034004534), we get a palindrome (63574047536).

The spelling of 43540043002 in words is "forty-three billion, five hundred forty million, forty-three thousand, two".