213951190994277 has 8 divisors (see below), whose sum is σ = 311201732355360. Its totient is φ = 129667388481360.

The previous prime is 213951190994239. The next prime is 213951190994293. The reversal of 213951190994277 is 772499091159312.

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

It is not a de Polignac number, because 213951190994277 - 2¹⁸ = 213951190732133 is a prime.

It is a super-2 number, since 2×213951190994277² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213951190994237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3241684712002 + ... + 3241684712067.

It is an arithmetic number, because the mean of its divisors is an integer number (38900216544420).

Almost surely, 2^{213951190994277} is an apocalyptic number.

It is an amenable number.

213951190994277 is a deficient number, since it is larger than the sum of its proper divisors (97250541361083).

213951190994277 is a wasteful number, since it uses less digits than its factorization.

213951190994277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6483369424083.

The product of its (nonzero) digits is 77157360, while the sum is 69.

The spelling of 213951190994277 in words is "two hundred thirteen trillion, nine hundred fifty-one billion, one hundred ninety million, nine hundred ninety-four thousand, two hundred seventy-seven".