1662361520928 has 48 divisors (see below), whose sum is σ = 4428828845280. Its totient is φ = 545850049536.

The previous prime is 1662361520893. The next prime is 1662361520929. The reversal of 1662361520928 is 8290251632661.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (1662361520929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129219433 + ... + 129232296.

It is an arithmetic number, because the mean of its divisors is an integer number (92267267610).

Almost surely, 2^{1662361520928} is an apocalyptic number.

It is an amenable number.

1662361520928 is an abundant number, since it is smaller than the sum of its proper divisors (2766467324352).

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

1662361520928 is a wasteful number, since it uses less digits than its factorization.

1662361520928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258451809 (or 258451801 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 1662361520928 in words is "one trillion, six hundred sixty-two billion, three hundred sixty-one million, five hundred twenty thousand, nine hundred twenty-eight".