635945700518061 has 8 divisors (see below), whose sum is σ = 848140167164640. Its totient is φ = 423857517108432.

The previous prime is 635945700518039. The next prime is 635945700518131. The reversal of 635945700518061 is 160815007549536.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 635945700518061 - 2¹³ = 635945700509869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 635945700517986 and 635945700518004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (635945700118061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26570795275 + ... + 26570819208.

It is an arithmetic number, because the mean of its divisors is an integer number (106017520895580).

Almost surely, 2^{635945700518061} is an apocalyptic number.

It is an amenable number.

635945700518061 is a deficient number, since it is larger than the sum of its proper divisors (212194466646579).

635945700518061 is a wasteful number, since it uses less digits than its factorization.

635945700518061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53141618475.

The product of its (nonzero) digits is 27216000, while the sum is 60.

The spelling of 635945700518061 in words is "six hundred thirty-five trillion, nine hundred forty-five billion, seven hundred million, five hundred eighteen thousand, sixty-one".