634071251044 has 96 divisors (see below), whose sum is σ = 1429683978240. Its totient is φ = 238798972800.

The previous prime is 634071251041. The next prime is 634071251089. The reversal of 634071251044 is 440152170436.

It is a junction number, because it is equal to n+sod(n) for n = 634071250994 and 634071251012.

It is not an unprimeable number, because it can be changed into a prime (634071251041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8431642 + ... + 8506510.

It is an arithmetic number, because the mean of its divisors is an integer number (14892541440).

Almost surely, 2^634071251044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634071251044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (714841989120).

634071251044 is an abundant number, since it is smaller than the sum of its proper divisors (795612727196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634071251044 is a wasteful number, since it uses less digits than its factorization.

634071251044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75809 (or 75807 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

It can be divided in two parts, 634071 and 251044, that added together give a triangular number (885115 = T₁₃₃₀).

The spelling of 634071251044 in words is "six hundred thirty-four billion, seventy-one million, two hundred fifty-one thousand, forty-four".