1669532746816 has 63 divisors (see below), whose sum is σ = 3641786977143. Its totient is φ = 758826837120.

The previous prime is 1669532746801. The next prime is 1669532746823. The reversal of 1669532746816 is 6186472359661.

The square root of 1669532746816 is 1292104.

It is a perfect power (a square), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 113697811 + ... + 113712493.

Almost surely, 2^{1669532746816} is an apocalyptic number.

1669532746816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1669532746816 is the 1292104-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1669532746816

1669532746816 is an abundant number, since it is smaller than the sum of its proper divisors (1972254230327).

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

1669532746816 is an frugal number, since it uses more digits than its factorization.

1669532746816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29400 (or 14696 counting only the distinct ones).

The product of its digits is 78382080, while the sum is 64.

Multiplying 1669532746816 by its sum of digits (64), we get a square (106850095796224 = 10336832²).

1669532746816 divided by its sum of digits (64) gives a square (26086449169 = 161513²).

The spelling of 1669532746816 in words is "one trillion, six hundred sixty-nine billion, five hundred thirty-two million, seven hundred forty-six thousand, eight hundred sixteen".