20151432636 has 12 divisors (see below), whose sum is σ = 47020009512. Its totient is φ = 6717144208.

The previous prime is 20151432629. The next prime is 20151432643. The reversal of 20151432636 is 63623415102.

It is an interprime number because it is at equal distance from previous prime (20151432629) and next prime (20151432643).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 20151432597 and 20151432606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839643015 + ... + 839643038.

It is an arithmetic number, because the mean of its divisors is an integer number (3918334126).

Almost surely, 2^20151432636 is an apocalyptic number.

It is an amenable number.

20151432636 is an abundant number, since it is smaller than the sum of its proper divisors (26868576876).

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

20151432636 is a wasteful number, since it uses less digits than its factorization.

20151432636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679286060 (or 1679286058 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 20151432636 its reverse (63623415102), we get a palindrome (83774847738).

The spelling of 20151432636 in words is "twenty billion, one hundred fifty-one million, four hundred thirty-two thousand, six hundred thirty-six".