43136797636 has 27 divisors (see below), whose sum is σ = 76246322061. Its totient is φ = 21354266304.

The previous prime is 43136797619. The next prime is 43136797657. The reversal of 43136797636 is 63679763134.

It is a happy number.

The square root of 43136797636 is 207694.

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., 760104900 + 42376692736 = 27570^2 + 205856^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 46938385 + ... + 46939303.

Almost surely, 2^43136797636 is an apocalyptic number.

43136797636 is the 207694-th square number.

It is an amenable number.

43136797636 is a deficient number, since it is larger than the sum of its proper divisors (33109524425).

43136797636 is an frugal number, since it uses more digits than its factorization.

43136797636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2068 (or 1034 counting only the distinct ones).

The product of its digits is 10287648, while the sum is 55.

The spelling of 43136797636 in words is "forty-three billion, one hundred thirty-six million, seven hundred ninety-seven thousand, six hundred thirty-six".