633670781252 has 6 divisors (see below), whose sum is σ = 1108923867198. Its totient is φ = 316835390624.

The previous prime is 633670781239. The next prime is 633670781267. The reversal of 633670781252 is 252187076336.

It can be written as a sum of positive squares in only one way, i.e., 422572803136 + 211097978116 = 650056^2 + 459454^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 633670781252.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 79208847653 + ... + 79208847660.

It is an arithmetic number, because the mean of its divisors is an integer number (184820644533).

Almost surely, 2^633670781252 is an apocalyptic number.

It is an amenable number.

633670781252 is a deficient number, since it is larger than the sum of its proper divisors (475253085946).

633670781252 is a wasteful number, since it uses less digits than its factorization.

633670781252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158417695317 (or 158417695315 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 633670781252 in words is "six hundred thirty-three billion, six hundred seventy million, seven hundred eighty-one thousand, two hundred fifty-two".