16261456220 has 12 divisors (see below), whose sum is σ = 34149058104. Its totient is φ = 6504582480.

The previous prime is 16261456187. The next prime is 16261456247. The reversal of 16261456220 is 2265416261.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406536386 + ... + 406536425.

It is an arithmetic number, because the mean of its divisors is an integer number (2845754842).

Almost surely, 2^16261456220 is an apocalyptic number.

16261456220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16261456220 is an abundant number, since it is smaller than the sum of its proper divisors (17887601884).

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

16261456220 is a wasteful number, since it uses less digits than its factorization.

16261456220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813072820 (or 813072818 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 16261456220 in words is "sixteen billion, two hundred sixty-one million, four hundred fifty-six thousand, two hundred twenty".