43687056457 has 4 divisors (see below), whose sum is σ = 47658607056. Its totient is φ = 39715505860.

The previous prime is 43687056407. The next prime is 43687056463. The reversal of 43687056457 is 75465078634.

43687056457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43687056457 - 2¹¹ = 43687054409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43687056398 and 43687056407.

It is not an unprimeable number, because it can be changed into a prime (43687056407) 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, 1985775283 + ... + 1985775304.

It is an arithmetic number, because the mean of its divisors is an integer number (11914651764).

Almost surely, 2^43687056457 is an apocalyptic number.

It is an amenable number.

43687056457 is a deficient number, since it is larger than the sum of its proper divisors (3971550599).

43687056457 is a wasteful number, since it uses less digits than its factorization.

43687056457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3971550598.

The product of its (nonzero) digits is 16934400, while the sum is 55.

The spelling of 43687056457 in words is "forty-three billion, six hundred eighty-seven million, fifty-six thousand, four hundred fifty-seven".