16404881530 has 32 divisors (see below), whose sum is σ = 30861991440. Its totient is φ = 6270351360.

The previous prime is 16404881513. The next prime is 16404881531. The reversal of 16404881530 is 3518840461.

It can be written as a sum of positive squares in 8 ways, for example, as 2944473169 + 13460408361 = 54263^2 + 116019^2 .

It is not an unprimeable number, because it can be changed into a prime (16404881531) 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, 263461 + ... + 319720.

Almost surely, 2^16404881530 is an apocalyptic number.

16404881530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16404881530 is a deficient number, since it is larger than the sum of its proper divisors (14457109910).

16404881530 is a wasteful number, since it uses less digits than its factorization.

16404881530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583314.

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 16404881530 in words is "sixteen billion, four hundred four million, eight hundred eighty-one thousand, five hundred thirty".