43045321455511 has 4 divisors (see below), whose sum is σ = 44916857170992. Its totient is φ = 41173785740032.

The previous prime is 43045321455473. The next prime is 43045321455547. The reversal of 43045321455511 is 11555412354034.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43045321455511 is a prime.

It is a super-2 number, since 2×43045321455511² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43045321455551) 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, 935767857706 + ... + 935767857751.

It is an arithmetic number, because the mean of its divisors is an integer number (11229214292748).

Almost surely, 2^{43045321455511} is an apocalyptic number.

43045321455511 is a deficient number, since it is larger than the sum of its proper divisors (1871535715481).

43045321455511 is a wasteful number, since it uses less digits than its factorization.

43045321455511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1871535715480.

The product of its (nonzero) digits is 720000, while the sum is 43.

The spelling of 43045321455511 in words is "forty-three trillion, forty-five billion, three hundred twenty-one million, four hundred fifty-five thousand, five hundred eleven".