20143631452 has 12 divisors (see below), whose sum is σ = 40287262960. Its totient is φ = 8632984896.

The previous prime is 20143631447. The next prime is 20143631471. The reversal of 20143631452 is 25413634102.

20143631452 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 359707677 + ... + 359707732.

Almost surely, 2^20143631452 is an apocalyptic number.

It is an amenable number.

20143631452 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20143631452 is a wasteful number, since it uses less digits than its factorization.

20143631452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719415420 (or 719415418 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The spelling of 20143631452 in words is "twenty billion, one hundred forty-three million, six hundred thirty-one thousand, four hundred fifty-two".