16545602420 has 24 divisors (see below), whose sum is σ = 36574490400. Its totient is φ = 6269912352.

The previous prime is 16545602419. The next prime is 16545602467. The reversal of 16545602420 is 2420654561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21770150 + ... + 21770909.

It is an arithmetic number, because the mean of its divisors is an integer number (1523937100).

Almost surely, 2^16545602420 is an apocalyptic number.

16545602420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16545602420 is an abundant number, since it is smaller than the sum of its proper divisors (20028887980).

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

16545602420 is a wasteful number, since it uses less digits than its factorization.

16545602420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43541087 (or 43541085 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 16545602420 in words is "sixteen billion, five hundred forty-five million, six hundred two thousand, four hundred twenty".