21550314303254 has 16 divisors (see below), whose sum is σ = 36797374621440. Its totient is φ = 9369701870760.

The previous prime is 21550314303223. The next prime is 21550314303263. The reversal of 21550314303254 is 45230341305512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21294776474 + ... + 21294777485.

It is an arithmetic number, because the mean of its divisors is an integer number (2299835913840).

Almost surely, 2^{21550314303254} is an apocalyptic number.

21550314303254 is a deficient number, since it is larger than the sum of its proper divisors (15247060318186).

21550314303254 is a wasteful number, since it uses less digits than its factorization.

21550314303254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42589553995.

The product of its (nonzero) digits is 216000, while the sum is 38.

Adding to 21550314303254 its reverse (45230341305512), we get a palindrome (66780655608766).

The spelling of 21550314303254 in words is "twenty-one trillion, five hundred fifty billion, three hundred fourteen million, three hundred three thousand, two hundred fifty-four".