635143270357268 has 6 divisors (see below), whose sum is σ = 1111500723125226. Its totient is φ = 317571635178632.

The previous prime is 635143270357261. The next prime is 635143270357331. The reversal of 635143270357268 is 862753072341536.

It can be written as a sum of positive squares in only one way, i.e., 560055984912004 + 75087285445264 = 23665502^2 + 8665292^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 635143270357268.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (635143270357261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79392908794655 + ... + 79392908794662.

It is an arithmetic number, because the mean of its divisors is an integer number (185250120520871).

Almost surely, 2^{635143270357268} is an apocalyptic number.

It is an amenable number.

635143270357268 is a deficient number, since it is larger than the sum of its proper divisors (476357452767958).

635143270357268 is a wasteful number, since it uses less digits than its factorization.

635143270357268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158785817589321 (or 158785817589319 counting only the distinct ones).

The product of its (nonzero) digits is 152409600, while the sum is 62.

The spelling of 635143270357268 in words is "six hundred thirty-five trillion, one hundred forty-three billion, two hundred seventy million, three hundred fifty-seven thousand, two hundred sixty-eight".