21454444034410 has 16 divisors (see below), whose sum is σ = 38654328537216. Its totient is φ = 8573704441488.

The previous prime is 21454444034381. The next prime is 21454444034459. The reversal of 21454444034410 is 1443044445412.

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, 1009135374 + ... + 1009156633.

It is an arithmetic number, because the mean of its divisors is an integer number (2415895533576).

Almost surely, 2^{21454444034410} is an apocalyptic number.

21454444034410 is a deficient number, since it is larger than the sum of its proper divisors (17199884502806).

21454444034410 is a wasteful number, since it uses less digits than its factorization.

21454444034410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018293077.

The product of its (nonzero) digits is 491520, while the sum is 40.

Adding to 21454444034410 its reverse (1443044445412), we get a palindrome (22897488479822).

The spelling of 21454444034410 in words is "twenty-one trillion, four hundred fifty-four billion, four hundred forty-four million, thirty-four thousand, four hundred ten".