634775064461 has 8 divisors (see below), whose sum is σ = 668821272000. Its totient is φ = 600792556320.

The previous prime is 634775064457. The next prime is 634775064467. The reversal of 634775064461 is 164460577436.

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

It is a cyclic number.

It is not a de Polignac number, because 634775064461 - 2² = 634775064457 is a prime.

It is a super-2 number, since 2×634775064461² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634775064467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15904385 + ... + 15944246.

It is an arithmetic number, because the mean of its divisors is an integer number (83602659000).

Almost surely, 2^634775064461 is an apocalyptic number.

It is an amenable number.

634775064461 is a deficient number, since it is larger than the sum of its proper divisors (34046207539).

634775064461 is a wasteful number, since it uses less digits than its factorization.

634775064461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31849699.

The product of its (nonzero) digits is 10160640, while the sum is 53.

The spelling of 634775064461 in words is "six hundred thirty-four billion, seven hundred seventy-five million, sixty-four thousand, four hundred sixty-one".