20402132375 has 16 divisors (see below), whose sum is σ = 25482737280. Its totient is φ = 16308324000.

The previous prime is 20402132339. The next prime is 20402132383. The reversal of 20402132375 is 57323120402.

It is not a de Polignac number, because 20402132375 - 2²⁰ = 20401083799 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 87581 + ... + 220169.

It is an arithmetic number, because the mean of its divisors is an integer number (1592671080).

Almost surely, 2^20402132375 is an apocalyptic number.

20402132375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20402132375 is a deficient number, since it is larger than the sum of its proper divisors (5080604905).

20402132375 is a wasteful number, since it uses less digits than its factorization.

20402132375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133835 (or 133825 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

Adding to 20402132375 its reverse (57323120402), we get a palindrome (77725252777).

The spelling of 20402132375 in words is "twenty billion, four hundred two million, one hundred thirty-two thousand, three hundred seventy-five".