21701331454 has 16 divisors (see below), whose sum is σ = 35513531136. Its totient is φ = 9863613400.

The previous prime is 21701331413. The next prime is 21701331539. The reversal of 21701331454 is 45413310712.

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, 668139 + ... + 699865.

It is an arithmetic number, because the mean of its divisors is an integer number (2219595696).

Almost surely, 2^21701331454 is an apocalyptic number.

21701331454 is a deficient number, since it is larger than the sum of its proper divisors (13812199682).

21701331454 is a wasteful number, since it uses less digits than its factorization.

21701331454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62831.

The product of its (nonzero) digits is 10080, while the sum is 31.

The spelling of 21701331454 in words is "twenty-one billion, seven hundred one million, three hundred thirty-one thousand, four hundred fifty-four".