213157996969 has 8 divisors (see below), whose sum is σ = 213658350048. Its totient is φ = 212657832480.

The previous prime is 213157996963. The next prime is 213157997029. The reversal of 213157996969 is 969699751312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213157996969 - 2¹¹ = 213157994921 is a prime.

It is a super-2 number, since 2×213157996969² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213157996963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2359309 + ... + 2447989.

It is an arithmetic number, because the mean of its divisors is an integer number (26707293756).

Almost surely, 2^213157996969 is an apocalyptic number.

It is an amenable number.

213157996969 is a deficient number, since it is larger than the sum of its proper divisors (500353079).

213157996969 is an equidigital number, since it uses as much as digits as its factorization.

213157996969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94295.

The product of its digits is 49601160, while the sum is 67.

The spelling of 213157996969 in words is "two hundred thirteen billion, one hundred fifty-seven million, nine hundred ninety-six thousand, nine hundred sixty-nine".