21832145907 has 16 divisors (see below), whose sum is σ = 34198606848. Its totient is φ = 12213787680.

The previous prime is 21832145887. The next prime is 21832145927. The reversal of 21832145907 is 70954123812.

It is an interprime number because it is at equal distance from previous prime (21832145887) and next prime (21832145927).

It is not a de Polignac number, because 21832145907 - 2⁷ = 21832145779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21832145927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25444963 + ... + 25445820.

It is an arithmetic number, because the mean of its divisors is an integer number (2137412928).

Almost surely, 2^21832145907 is an apocalyptic number.

21832145907 is a deficient number, since it is larger than the sum of its proper divisors (12366460941).

21832145907 is a wasteful number, since it uses less digits than its factorization.

21832145907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50890810.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 21832145907 in words is "twenty-one billion, eight hundred thirty-two million, one hundred forty-five thousand, nine hundred seven".