43081020231657 has 16 divisors (see below), whose sum is σ = 59940141264000. Its totient is φ = 27471345114752.

The previous prime is 43081020231637. The next prime is 43081020231671. The reversal of 43081020231657 is 75613202018034.

It is a cyclic number.

It is not a de Polignac number, because 43081020231657 - 2⁸ = 43081020231401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43081020231637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3788532 + ... + 10025717.

It is an arithmetic number, because the mean of its divisors is an integer number (3746258829000).

Almost surely, 2^{43081020231657} is an apocalyptic number.

It is an amenable number.

43081020231657 is a deficient number, since it is larger than the sum of its proper divisors (16859121032343).

43081020231657 is a wasteful number, since it uses less digits than its factorization.

43081020231657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13859472.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 43081020231657 in words is "forty-three trillion, eighty-one billion, twenty million, two hundred thirty-one thousand, six hundred fifty-seven".