21551602341 has 16 divisors (see below), whose sum is σ = 28792865088. Its totient is φ = 14339068800.

The previous prime is 21551602309. The next prime is 21551602363. The reversal of 21551602341 is 14320615512.

It is not a de Polignac number, because 21551602341 - 2⁵ = 21551602309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21551602299 and 21551602308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21551602381) 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, 3893746 + ... + 3899276.

It is an arithmetic number, because the mean of its divisors is an integer number (1799554068).

Almost surely, 2^21551602341 is an apocalyptic number.

It is an amenable number.

21551602341 is a deficient number, since it is larger than the sum of its proper divisors (7241262747).

21551602341 is a wasteful number, since it uses less digits than its factorization.

21551602341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7892.

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 21551602341 in words is "twenty-one billion, five hundred fifty-one million, six hundred two thousand, three hundred forty-one".