16215620120 has 64 divisors (see below), whose sum is σ = 43042406400. Its totient is φ = 5380295040.

The previous prime is 16215620107. The next prime is 16215620123. The reversal of 16215620120 is 2102651261.

It is a super-2 number, since 2×16215620120² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16215620120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16215620123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 925400 + ... + 942759.

It is an arithmetic number, because the mean of its divisors is an integer number (672537600).

Almost surely, 2^16215620120 is an apocalyptic number.

16215620120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16215620120 is an abundant number, since it is smaller than the sum of its proper divisors (26826786280).

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

16215620120 is a wasteful number, since it uses less digits than its factorization.

16215620120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868208 (or 1868204 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The spelling of 16215620120 in words is "sixteen billion, two hundred fifteen million, six hundred twenty thousand, one hundred twenty".