634048705871 has 4 divisors (see below), whose sum is σ = 724627092432. Its totient is φ = 543470319312.

The previous prime is 634048705847. The next prime is 634048705889. The reversal of 634048705871 is 178507840436.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 634048705871 - 2¹⁴ = 634048689487 is a prime.

It is a super-2 number, since 2×634048705871² (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 (634048705471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45289193270 + ... + 45289193283.

It is an arithmetic number, because the mean of its divisors is an integer number (181156773108).

Almost surely, 2^634048705871 is an apocalyptic number.

634048705871 is a deficient number, since it is larger than the sum of its proper divisors (90578386561).

634048705871 is an equidigital number, since it uses as much as digits as its factorization.

634048705871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90578386560.

The product of its (nonzero) digits is 4515840, while the sum is 53.

The spelling of 634048705871 in words is "six hundred thirty-four billion, forty-eight million, seven hundred five thousand, eight hundred seventy-one".