634661447473 has 8 divisors (see below), whose sum is σ = 635777316000. Its totient is φ = 633546126048.

The previous prime is 634661447449. The next prime is 634661447503. The reversal of 634661447473 is 374744166436.

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 634661447473 - 2⁹ = 634661446961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634661457473) 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, 2220958 + ... + 2490376.

It is an arithmetic number, because the mean of its divisors is an integer number (79472164500).

Almost surely, 2^634661447473 is an apocalyptic number.

It is an amenable number.

634661447473 is a deficient number, since it is larger than the sum of its proper divisors (1115868527).

634661447473 is a wasteful number, since it uses less digits than its factorization.

634661447473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273551.

The product of its digits is 24385536, while the sum is 55.

The spelling of 634661447473 in words is "six hundred thirty-four billion, six hundred sixty-one million, four hundred forty-seven thousand, four hundred seventy-three".