43478695657 has 16 divisors (see below), whose sum is σ = 47020861440. Its totient is φ = 40072414608.

The previous prime is 43478695649. The next prime is 43478695669. The reversal of 43478695657 is 75659687434.

It is a cyclic number.

It is not a de Polignac number, because 43478695657 - 2³ = 43478695649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43478395657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3358 + ... + 294904.

It is an arithmetic number, because the mean of its divisors is an integer number (2938803840).

Almost surely, 2^43478695657 is an apocalyptic number.

43478695657 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

43478695657 is a deficient number, since it is larger than the sum of its proper divisors (3542165783).

43478695657 is a wasteful number, since it uses less digits than its factorization.

43478695657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291780.

The product of its digits is 152409600, while the sum is 64.

The spelling of 43478695657 in words is "forty-three billion, four hundred seventy-eight million, six hundred ninety-five thousand, six hundred fifty-seven".