16461003408 has 80 divisors (see below), whose sum is σ = 44738969856. Its totient is φ = 5208468480.

The previous prime is 16461003397. The next prime is 16461003409. The reversal of 16461003408 is 80430016461.

It is a super-2 number, since 2×16461003408² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16461003409) 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, 40216 + ... + 185847.

Almost surely, 2^16461003408 is an apocalyptic number.

It is an amenable number.

16461003408 is an abundant number, since it is smaller than the sum of its proper divisors (28277966448).

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

16461003408 is a wasteful number, since it uses less digits than its factorization.

16461003408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226152 (or 226146 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

Adding to 16461003408 its reverse (80430016461), we get a palindrome (96891019869).

The spelling of 16461003408 in words is "sixteen billion, four hundred sixty-one million, three thousand, four hundred eight".