213261172627 has 4 divisors (see below), whose sum is σ = 213389413120. Its totient is φ = 213132932136.

The previous prime is 213261172613. The next prime is 213261172651. The reversal of 213261172627 is 726271162312.

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 213261172627 - 2¹¹ = 213261170579 is a prime.

It is a super-2 number, since 2×213261172627² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213261172627.

It is not an unprimeable number, because it can be changed into a prime (213261172667) 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 3 ways as a sum of consecutive naturals, for example, 64117752 + ... + 64121077.

It is an arithmetic number, because the mean of its divisors is an integer number (53347353280).

Almost surely, 2^213261172627 is an apocalyptic number.

213261172627 is a deficient number, since it is larger than the sum of its proper divisors (128240493).

213261172627 is a wasteful number, since it uses less digits than its factorization.

213261172627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128240492.

The product of its digits is 84672, while the sum is 40.

The spelling of 213261172627 in words is "two hundred thirteen billion, two hundred sixty-one million, one hundred seventy-two thousand, six hundred twenty-seven".