213957011917043 has 4 divisors (see below), whose sum is σ = 213957535651608. Its totient is φ = 213956488182480.

The previous prime is 213957011917039. The next prime is 213957011917049. The reversal of 213957011917043 is 340719110759312.

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 213957011917043 - 2² = 213957011917039 is a prime.

It is a super-3 number, since 3×213957011917043³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213957011917049) 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, 261254021 + ... + 262071702.

It is an arithmetic number, because the mean of its divisors is an integer number (53489383912902).

Almost surely, 2^{213957011917043} is an apocalyptic number.

213957011917043 is a deficient number, since it is larger than the sum of its proper divisors (523734565).

213957011917043 is an equidigital number, since it uses as much as digits as its factorization.

213957011917043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523734564.

The product of its (nonzero) digits is 1428840, while the sum is 53.

The spelling of 213957011917043 in words is "two hundred thirteen trillion, nine hundred fifty-seven billion, eleven million, nine hundred seventeen thousand, forty-three".