634048720440 has 64 divisors (see below), whose sum is σ = 1946382134400. Its totient is φ = 165147572352.

The previous prime is 634048720439. The next prime is 634048720441. The reversal of 634048720440 is 44027840436.

It is a happy number.

634048720440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (634048720439) and next prime (634048720441).

It is a junction number, because it is equal to n+sod(n) for n = 634048720392 and 634048720401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634048720441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61433670 + ... + 61443989.

It is an arithmetic number, because the mean of its divisors is an integer number (30412220850).

Almost surely, 2^634048720440 is an apocalyptic number.

634048720440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

634048720440 is an abundant number, since it is smaller than the sum of its proper divisors (1312333413960).

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

634048720440 is a wasteful number, since it uses less digits than its factorization.

634048720440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122877716 (or 122877712 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 42.

The spelling of 634048720440 in words is "six hundred thirty-four billion, forty-eight million, seven hundred twenty thousand, four hundred forty".