63635041641645 has 20 divisors (see below), whose sum is σ = 114071704276860. Its totient is φ = 33938688875328.

The previous prime is 63635041641637. The next prime is 63635041641671. The reversal of 63635041641645 is 54614614053636.

It is a happy number.

63635041641645 is a `hidden beast` number, since 6 + 3 + 63 + 5 + 0 + 416 + 4 + 164 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10850791754916 + 52784249886729 = 3294054^2 + 7265277^2 .

It is not a de Polignac number, because 63635041641645 - 2³ = 63635041641637 is a prime.

It is a super-3 number, since 3×63635041641645³ (a number of 42 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63635041641591 and 63635041641600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 78561779400 + ... + 78561780209.

It is an arithmetic number, because the mean of its divisors is an integer number (5703585213843).

Almost surely, 2^{63635041641645} is an apocalyptic number.

It is an amenable number.

63635041641645 is a deficient number, since it is larger than the sum of its proper divisors (50436662635215).

63635041641645 is a wasteful number, since it uses less digits than its factorization.

63635041641645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157123559626 (or 157123559617 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 54.

The spelling of 63635041641645 in words is "sixty-three trillion, six hundred thirty-five billion, forty-one million, six hundred forty-one thousand, six hundred forty-five".