16657463021020 has 48 divisors (see below), whose sum is σ = 35503464211488. Its totient is φ = 6563409684480.

The previous prime is 16657463020999. The next prime is 16657463021029. The reversal of 16657463021020 is 2012036475661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16657463021029) 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, 98648184 + ... + 98816896.

It is an arithmetic number, because the mean of its divisors is an integer number (739655504406).

Almost surely, 2^{16657463021020} is an apocalyptic number.

16657463021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16657463021020 is an abundant number, since it is smaller than the sum of its proper divisors (18846001190468).

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

16657463021020 is a wasteful number, since it uses less digits than its factorization.

16657463021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242470 (or 242468 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

Adding to 16657463021020 its reverse (2012036475661), we get a palindrome (18669499496681).

The spelling of 16657463021020 in words is "sixteen trillion, six hundred fifty-seven billion, four hundred sixty-three million, twenty-one thousand, twenty".