213157726689 has 16 divisors (see below), whose sum is σ = 289332267840. Its totient is φ = 139566535680.

The previous prime is 213157726687. The next prime is 213157726697. The reversal of 213157726689 is 986627751312.

It is not a de Polignac number, because 213157726689 - 2¹ = 213157726687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213157726687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2757684 + ... + 2833925.

It is an arithmetic number, because the mean of its divisors is an integer number (18083266740).

Almost surely, 2^213157726689 is an apocalyptic number.

It is an amenable number.

213157726689 is a deficient number, since it is larger than the sum of its proper divisors (76174541151).

213157726689 is a wasteful number, since it uses less digits than its factorization.

213157726689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5591840.

The product of its digits is 7620480, while the sum is 57.

The spelling of 213157726689 in words is "two hundred thirteen billion, one hundred fifty-seven million, seven hundred twenty-six thousand, six hundred eighty-nine".