21355073014 has 8 divisors (see below), whose sum is σ = 34944664968. Its totient is φ = 9706851360.

The previous prime is 21355072967. The next prime is 21355073017. The reversal of 21355073014 is 41037055312.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21355073017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485342547 + ... + 485342590.

It is an arithmetic number, because the mean of its divisors is an integer number (4368083121).

Almost surely, 2^21355073014 is an apocalyptic number.

21355073014 is a deficient number, since it is larger than the sum of its proper divisors (13589591954).

21355073014 is a wasteful number, since it uses less digits than its factorization.

21355073014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970685150.

The product of its (nonzero) digits is 12600, while the sum is 31.

The spelling of 21355073014 in words is "twenty-one billion, three hundred fifty-five million, seventy-three thousand, fourteen".