14420631640 has 64 divisors (see below), whose sum is σ = 33654852000. Its totient is φ = 5554483200.

The previous prime is 14420631629. The next prime is 14420631721. The reversal of 14420631640 is 4613602441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 423240 + ... + 456040.

Almost surely, 2^14420631640 is an apocalyptic number.

14420631640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 14420631640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16827426000).

14420631640 is an abundant number, since it is smaller than the sum of its proper divisors (19234220360).

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

14420631640 is a wasteful number, since it uses less digits than its factorization.

14420631640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33220 (or 33216 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 14420631640 in words is "fourteen billion, four hundred twenty million, six hundred thirty-one thousand, six hundred forty".