43478261787 has 8 divisors (see below), whose sum is σ = 61381075536. Its totient is φ = 27280477952.

The previous prime is 43478261759. The next prime is 43478261789. The reversal of 43478261787 is 78716287434.

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

It is a cyclic number.

It is not a de Polignac number, because 43478261787 - 2¹⁵ = 43478229019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43478261789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426257418 + ... + 426257519.

It is an arithmetic number, because the mean of its divisors is an integer number (7672634442).

Almost surely, 2^43478261787 is an apocalyptic number.

43478261787 is a deficient number, since it is larger than the sum of its proper divisors (17902813749).

43478261787 is a wasteful number, since it uses less digits than its factorization.

43478261787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852514957.

The product of its digits is 12644352, while the sum is 57.

The spelling of 43478261787 in words is "forty-three billion, four hundred seventy-eight million, two hundred sixty-one thousand, seven hundred eighty-seven".