20215432411 has 4 divisors (see below), whose sum is σ = 21404575512. Its totient is φ = 19026289312.

The previous prime is 20215432381. The next prime is 20215432417. The reversal of 20215432411 is 11423451202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20215432411 - 2⁷ = 20215432283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20215432417) by changing a digit.

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, 594571525 + ... + 594571558.

It is an arithmetic number, because the mean of its divisors is an integer number (5351143878).

Almost surely, 2^20215432411 is an apocalyptic number.

20215432411 is a deficient number, since it is larger than the sum of its proper divisors (1189143101).

20215432411 is a wasteful number, since it uses less digits than its factorization.

20215432411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189143100.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 20215432411 its reverse (11423451202), we get a palindrome (31638883613).

The spelling of 20215432411 in words is "twenty billion, two hundred fifteen million, four hundred thirty-two thousand, four hundred eleven".