53021320016 has 20 divisors (see below), whose sum is σ = 117404351712. Its totient is φ = 22723422816.

The previous prime is 53021319961. The next prime is 53021320021. The reversal of 53021320016 is 61002312035.

It is a super-2 number, since 2×53021320016² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53021319973 and 53021320000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236702210 + ... + 236702433.

Almost surely, 2^53021320016 is an apocalyptic number.

53021320016 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

53021320016 is an abundant number, since it is smaller than the sum of its proper divisors (64383031696).

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

53021320016 is a wasteful number, since it uses less digits than its factorization.

53021320016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473404658 (or 473404652 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The spelling of 53021320016 in words is "fifty-three billion, twenty-one million, three hundred twenty thousand, sixteen".