43690614529 has 9 divisors (see below), whose sum is σ = 44739508419. Its totient is φ = 42665774760.

The previous prime is 43690614497. The next prime is 43690614547. The reversal of 43690614529 is 92541609634.

The square root of 43690614529 is 209023.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 40169378929 + 3521235600 = 200423^2 + 59340^2 .

It is not a de Polignac number, because 43690614529 - 2⁵ = 43690614497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43690614029) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8985559 + ... + 8990419.

It is an arithmetic number, because the mean of its divisors is an integer number (4971056491).

Almost surely, 2^43690614529 is an apocalyptic number.

43690614529 is the 209023-rd square number.

43690614529 is the 104512-nd centered octagonal number.

It is an amenable number.

43690614529 is a deficient number, since it is larger than the sum of its proper divisors (1048893890).

43690614529 is an frugal number, since it uses more digits than its factorization.

43690614529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9808 (or 4904 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 49.

Multiplying 43690614529 by its sum of digits (49), we get a square (2140840111921 = 1463161²).

The spelling of 43690614529 in words is "forty-three billion, six hundred ninety million, six hundred fourteen thousand, five hundred twenty-nine".