634250213040 has 80 divisors (see below), whose sum is σ = 2069658604800. Its totient is φ = 160231631616.

The previous prime is 634250212993. The next prime is 634250213041. The reversal of 634250213040 is 40312052436.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 634250212989 and 634250213007.

It is not an unprimeable number, because it can be changed into a prime (634250213041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69540420 + ... + 69549539.

It is an arithmetic number, because the mean of its divisors is an integer number (25870732560).

Almost surely, 2^634250213040 is an apocalyptic number.

634250213040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

634250213040 is an abundant number, since it is smaller than the sum of its proper divisors (1435408391760).

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

634250213040 is a wasteful number, since it uses less digits than its factorization.

634250213040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139089994 (or 139089988 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 634250213040 its reverse (40312052436), we get a palindrome (674562265476).

The spelling of 634250213040 in words is "six hundred thirty-four billion, two hundred fifty million, two hundred thirteen thousand, forty".