21070455503316 has 12 divisors (see below), whose sum is σ = 49164396174432. Its totient is φ = 7023485167768.

The previous prime is 21070455503297. The next prime is 21070455503329. The reversal of 21070455503316 is 61330555407012.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 877935645960 + ... + 877935645983.

It is an arithmetic number, because the mean of its divisors is an integer number (4097033014536).

Almost surely, 2^{21070455503316} is an apocalyptic number.

It is an amenable number.

21070455503316 is an abundant number, since it is smaller than the sum of its proper divisors (28093940671116).

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

21070455503316 is a wasteful number, since it uses less digits than its factorization.

21070455503316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755871291950 (or 1755871291948 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 42.

The spelling of 21070455503316 in words is "twenty-one trillion, seventy billion, four hundred fifty-five million, five hundred three thousand, three hundred sixteen".