651303420636 has 48 divisors (see below), whose sum is σ = 1693136954880. Its totient is φ = 193165422720.

The previous prime is 651303420631. The next prime is 651303420749. The reversal of 651303420636 is 636024303156.

651303420636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×651303420636² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 651303420594 and 651303420603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651303420631) 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, 52484401 + ... + 52496808.

It is an arithmetic number, because the mean of its divisors is an integer number (35273686560).

Almost surely, 2^651303420636 is an apocalyptic number.

651303420636 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

651303420636 is an abundant number, since it is smaller than the sum of its proper divisors (1041833534244).

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

651303420636 is a wasteful number, since it uses less digits than its factorization.

651303420636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104981274 (or 104981272 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 39.

The spelling of 651303420636 in words is "six hundred fifty-one billion, three hundred three million, four hundred twenty thousand, six hundred thirty-six".