213514722561 has 32 divisors (see below), whose sum is σ = 339572441088. Its totient is φ = 116679372480.

The previous prime is 213514722559. The next prime is 213514722569. The reversal of 213514722561 is 165227415312.

It is not a de Polignac number, because 213514722561 - 2¹ = 213514722559 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213514722569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2408656 + ... + 2495726.

It is an arithmetic number, because the mean of its divisors is an integer number (10611638784).

Almost surely, 2^213514722561 is an apocalyptic number.

213514722561 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

213514722561 is a deficient number, since it is larger than the sum of its proper divisors (126057718527).

213514722561 is a wasteful number, since it uses less digits than its factorization.

213514722561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92181.

The product of its digits is 100800, while the sum is 39.

The spelling of 213514722561 in words is "two hundred thirteen billion, five hundred fourteen million, seven hundred twenty-two thousand, five hundred sixty-one".