16657531461440 has 56 divisors (see below), whose sum is σ = 39666682546080. Its totient is φ = 6662855397888.

The previous prime is 16657531461379. The next prime is 16657531461449. The reversal of 16657531461440 is 4416413575661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16657531461449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13476131 + ... + 14660189.

Almost surely, 2^{16657531461440} is an apocalyptic number.

16657531461440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16657531461440 is an abundant number, since it is smaller than the sum of its proper divisors (23009151084640).

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

16657531461440 is a wasteful number, since it uses less digits than its factorization.

16657531461440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228039 (or 1228029 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 16657531461440 in words is "sixteen trillion, six hundred fifty-seven billion, five hundred thirty-one million, four hundred sixty-one thousand, four hundred forty".