213303763788 has 12 divisors (see below), whose sum is σ = 497708782200. Its totient is φ = 71101254592.

The previous prime is 213303763787. The next prime is 213303763789. The reversal of 213303763788 is 887367303312.

It is an interprime number because it is at equal distance from previous prime (213303763787) and next prime (213303763789).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×213303763788² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213303763788.

It is not an unprimeable number, because it can be changed into a prime (213303763781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8887656813 + ... + 8887656836.

It is an arithmetic number, because the mean of its divisors is an integer number (41475731850).

Almost surely, 2^213303763788 is an apocalyptic number.

It is an amenable number.

213303763788 is an abundant number, since it is smaller than the sum of its proper divisors (284405018412).

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

213303763788 is a wasteful number, since it uses less digits than its factorization.

213303763788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17775313656 (or 17775313654 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 51.

The spelling of 213303763788 in words is "two hundred thirteen billion, three hundred three million, seven hundred sixty-three thousand, seven hundred eighty-eight".