636968901357 has 48 divisors (see below), whose sum is σ = 1011949481088. Its totient is φ = 399524114880.

The previous prime is 636968901337. The next prime is 636968901377. The reversal of 636968901357 is 753109869636.

636968901357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (636968901337) and next prime (636968901377).

It is not a de Polignac number, because 636968901357 - 2⁶ = 636968901293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 636968901294 and 636968901303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636968901337) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 593238 + ... + 1275095.

It is an arithmetic number, because the mean of its divisors is an integer number (21082280856).

Almost surely, 2^636968901357 is an apocalyptic number.

It is an amenable number.

636968901357 is a deficient number, since it is larger than the sum of its proper divisors (374980579731).

636968901357 is a wasteful number, since it uses less digits than its factorization.

636968901357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868432 (or 1868420 counting only the distinct ones).

The product of its (nonzero) digits is 44089920, while the sum is 63.

The spelling of 636968901357 in words is "six hundred thirty-six billion, nine hundred sixty-eight million, nine hundred one thousand, three hundred fifty-seven".