16351440007428 has 72 divisors (see below), whose sum is σ = 44315917167200. Its totient is φ = 5213502592848.

The previous prime is 16351440007423. The next prime is 16351440007429. The reversal of 16351440007428 is 82470004415361.

16351440007428 is a `hidden beast` number, since 1 + 6 + 3 + 514 + 40 + 0 + 0 + 74 + 28 = 666.

It is not an unprimeable number, because it can be changed into a prime (16351440007423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143045158 + ... + 143159421.

Almost surely, 2^{16351440007428} is an apocalyptic number.

16351440007428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16351440007428 is an abundant number, since it is smaller than the sum of its proper divisors (27964477159772).

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

16351440007428 is a wasteful number, since it uses less digits than its factorization.

16351440007428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286204638 (or 286204607 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 16351440007428 in words is "sixteen trillion, three hundred fifty-one billion, four hundred forty million, seven thousand, four hundred twenty-eight".