43478299651 has 4 divisors (see below), whose sum is σ = 43480554832. Its totient is φ = 43476044472.

The previous prime is 43478299637. The next prime is 43478299687. The reversal of 43478299651 is 15699287434.

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

It is a cyclic number.

It is not a de Polignac number, because 43478299651 - 2¹⁷ = 43478168579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43478291651) 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, 1098420 + ... + 1137313.

It is an arithmetic number, because the mean of its divisors is an integer number (10870138708).

Almost surely, 2^43478299651 is an apocalyptic number.

43478299651 is a deficient number, since it is larger than the sum of its proper divisors (2255181).

43478299651 is a wasteful number, since it uses less digits than its factorization.

43478299651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255180.

The product of its digits is 13063680, while the sum is 58.

The spelling of 43478299651 in words is "forty-three billion, four hundred seventy-eight million, two hundred ninety-nine thousand, six hundred fifty-one".