43769892081997 has 4 divisors (see below), whose sum is σ = 43769905524796. Its totient is φ = 43769878639200.

The previous prime is 43769892081943. The next prime is 43769892082013. The reversal of 43769892081997 is 79918029896734.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 7323810712516 + 36446081369481 = 2706254^2 + 6037059^2 .

It is a cyclic number.

It is not a de Polignac number, because 43769892081997 - 2¹⁵ = 43769892049229 is a prime.

It is a super-3 number, since 3×43769892081997³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43769892081997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43769892087997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1581247 + ... + 9488947.

It is an arithmetic number, because the mean of its divisors is an integer number (10942476381199).

Almost surely, 2^{43769892081997} is an apocalyptic number.

It is an amenable number.

43769892081997 is a deficient number, since it is larger than the sum of its proper divisors (13442799).

43769892081997 is an equidigital number, since it uses as much as digits as its factorization.

43769892081997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13442798.

The product of its (nonzero) digits is 2962842624, while the sum is 82.

The spelling of 43769892081997 in words is "forty-three trillion, seven hundred sixty-nine billion, eight hundred ninety-two million, eighty-one thousand, nine hundred ninety-seven".