213754816971 has 32 divisors (see below), whose sum is σ = 335371104000. Its totient is φ = 134092897920.

The previous prime is 213754816949. The next prime is 213754816981. The reversal of 213754816971 is 179618457312.

213754816971 is a `hidden beast` number, since 2 + 1 + 3 + 7 + 548 + 1 + 6 + 97 + 1 = 666.

It is not a de Polignac number, because 213754816971 - 2⁶ = 213754816907 is a prime.

It is a super-2 number, since 2×213754816971² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213754816931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2294776 + ... + 2386106.

It is an arithmetic number, because the mean of its divisors is an integer number (10480347000).

Almost surely, 2^213754816971 is an apocalyptic number.

213754816971 is a deficient number, since it is larger than the sum of its proper divisors (121616287029).

213754816971 is a wasteful number, since it uses less digits than its factorization.

213754816971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96456 (or 96450 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The spelling of 213754816971 in words is "two hundred thirteen billion, seven hundred fifty-four million, eight hundred sixteen thousand, nine hundred seventy-one".