21550454040710 has 64 divisors (see below), whose sum is σ = 44748575815680. Its totient is φ = 7319364074880.

The previous prime is 21550454040677. The next prime is 21550454040727. The reversal of 21550454040710 is 1704045405512.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 240691331 + ... + 240780849.

It is an arithmetic number, because the mean of its divisors is an integer number (699196497120).

Almost surely, 2^{21550454040710} is an apocalyptic number.

21550454040710 is an abundant number, since it is smaller than the sum of its proper divisors (23198121774970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21550454040710 is a wasteful number, since it uses less digits than its factorization.

21550454040710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121781.

The product of its (nonzero) digits is 112000, while the sum is 38.

The spelling of 21550454040710 in words is "twenty-one trillion, five hundred fifty billion, four hundred fifty-four million, forty thousand, seven hundred ten".