21551432151341 has 8 divisors (see below), whose sum is σ = 22010064075264. Its totient is φ = 21092804011440.

The previous prime is 21551432151283. The next prime is 21551432151383. The reversal of 21551432151341 is 14315123415512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21551432151341 - 2³⁴ = 21534252282157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21551432151295 and 21551432151304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21551432151841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12611516 + ... + 14218058.

It is an arithmetic number, because the mean of its divisors is an integer number (2751258009408).

Almost surely, 2^{21551432151341} is an apocalyptic number.

It is an amenable number.

21551432151341 is a deficient number, since it is larger than the sum of its proper divisors (458631923923).

21551432151341 is a wasteful number, since it uses less digits than its factorization.

21551432151341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892011.

The product of its digits is 72000, while the sum is 38.

Adding to 21551432151341 its reverse (14315123415512), we get a palindrome (35866555566853).

The spelling of 21551432151341 in words is "twenty-one trillion, five hundred fifty-one billion, four hundred thirty-two million, one hundred fifty-one thousand, three hundred forty-one".