16761345145 has 8 divisors (see below), whose sum is σ = 20260429704. Its totient is φ = 13311199104.

The previous prime is 16761345137. The next prime is 16761345157. The reversal of 16761345145 is 54154316761.

It can be written as a sum of positive squares in 4 ways, for example, as 740873961 + 16020471184 = 27219^2 + 126572^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 16761345145 - 2³ = 16761345137 is a prime.

It is a Duffinian 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, 12233874 + ... + 12235243.

It is an arithmetic number, because the mean of its divisors is an integer number (2532553713).

Almost surely, 2^16761345145 is an apocalyptic number.

It is an amenable number.

16761345145 is a deficient number, since it is larger than the sum of its proper divisors (3499084559).

16761345145 is a wasteful number, since it uses less digits than its factorization.

16761345145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24469259.

The product of its digits is 302400, while the sum is 43.

The spelling of 16761345145 in words is "sixteen billion, seven hundred sixty-one million, three hundred forty-five thousand, one hundred forty-five".