43720038828656 has 10 divisors (see below), whose sum is σ = 84707575230552. Its totient is φ = 21860019414320.

The previous prime is 43720038828647. The next prime is 43720038828689. The reversal of 43720038828656 is 65682883002734.

It is a super-2 number, since 2×43720038828656² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1366251213380 + ... + 1366251213411.

Almost surely, 2^{43720038828656} is an apocalyptic number.

It is an amenable number.

43720038828656 is a deficient number, since it is larger than the sum of its proper divisors (40987536401896).

43720038828656 is a wasteful number, since it uses less digits than its factorization.

43720038828656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2732502426799 (or 2732502426793 counting only the distinct ones).

The product of its (nonzero) digits is 92897280, while the sum is 62.

The spelling of 43720038828656 in words is "forty-three trillion, seven hundred twenty billion, thirty-eight million, eight hundred twenty-eight thousand, six hundred fifty-six".