16780093445 has 8 divisors (see below), whose sum is σ = 20141404920. Its totient is φ = 13420546240.

The previous prime is 16780093427. The next prime is 16780093501. The reversal of 16780093445 is 54439008761.

It is a Cunningham number, because it is equal to 129538²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 6040709284 + 10739384161 = 77722^2 + 103631^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16780093445 - 2⁸ = 16780093189 is a prime.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 16780093445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420050 + ... + 458259.

It is an arithmetic number, because the mean of its divisors is an integer number (2517675615).

Almost surely, 2^16780093445 is an apocalyptic number.

It is an amenable number.

16780093445 is a deficient number, since it is larger than the sum of its proper divisors (3361311475).

16780093445 is an equidigital number, since it uses as much as digits as its factorization.

16780093445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882135.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 16780093445 in words is "sixteen billion, seven hundred eighty million, ninety-three thousand, four hundred forty-five".