213344556672 has 64 divisors (see below), whose sum is σ = 610288529760. Its totient is φ = 65644477440.

The previous prime is 213344556661. The next prime is 213344556683. The reversal of 213344556672 is 276655443312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (213344556661) and next prime (213344556683).

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21363654 + ... + 21373637.

Almost surely, 2^213344556672 is an apocalyptic number.

It is an amenable number.

213344556672 is an abundant number, since it is smaller than the sum of its proper divisors (396943973088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213344556672 is a wasteful number, since it uses less digits than its factorization.

213344556672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42737321 (or 42737309 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 48.

Adding to 213344556672 its reverse (276655443312), we get a palindrome (489999999984).

The spelling of 213344556672 in words is "two hundred thirteen billion, three hundred forty-four million, five hundred fifty-six thousand, six hundred seventy-two".