43722656545 has 8 divisors (see below), whose sum is σ = 52471016640. Its totient is φ = 34975572720.

The previous prime is 43722656477. The next prime is 43722656557. The reversal of 43722656545 is 54565622734.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-43722656545 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242005 + ... + 382114.

It is an arithmetic number, because the mean of its divisors is an integer number (6558877080).

Almost surely, 2^43722656545 is an apocalyptic number.

It is an amenable number.

43722656545 is a deficient number, since it is larger than the sum of its proper divisors (8748360095).

43722656545 is a wasteful number, since it uses less digits than its factorization.

43722656545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638135.

The product of its digits is 6048000, while the sum is 49.

The spelling of 43722656545 in words is "forty-three billion, seven hundred twenty-two million, six hundred fifty-six thousand, five hundred forty-five".