16220505552 has 40 divisors (see below), whose sum is σ = 42160066464. Its totient is φ = 5373661824.

The previous prime is 16220505551. The next prime is 16220505563. The reversal of 16220505552 is 25550502261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16220505551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1028763 + ... + 1044410.

Almost surely, 2^16220505552 is an apocalyptic number.

16220505552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16220505552 is an abundant number, since it is smaller than the sum of its proper divisors (25939560912).

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

16220505552 is a wasteful number, since it uses less digits than its factorization.

16220505552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2073347 (or 2073341 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 16220505552 in words is "sixteen billion, two hundred twenty million, five hundred five thousand, five hundred fifty-two".