635680451595068 has 48 divisors (see below), whose sum is σ = 1218511704896640. Its totient is φ = 287770240900800.

The previous prime is 635680451595067. The next prime is 635680451595083. The reversal of 635680451595068 is 860595154086536.

It is a junction number, because it is equal to n+sod(n) for n = 635680451594992 and 635680451595010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (635680451595067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24204203 + ... + 43095293.

It is an arithmetic number, because the mean of its divisors is an integer number (25385660518680).

Almost surely, 2^{635680451595068} is an apocalyptic number.

It is an amenable number.

635680451595068 is a deficient number, since it is larger than the sum of its proper divisors (582831253301572).

635680451595068 is a wasteful number, since it uses less digits than its factorization.

635680451595068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18894218 (or 18894216 counting only the distinct ones).

The product of its (nonzero) digits is 933120000, while the sum is 71.

The spelling of 635680451595068 in words is "six hundred thirty-five trillion, six hundred eighty billion, four hundred fifty-one million, five hundred ninety-five thousand, sixty-eight".