16700578745 has 16 divisors (see below), whose sum is σ = 21252732048. Its totient is φ = 12554895360.

The previous prime is 16700578733. The next prime is 16700578787. The reversal of 16700578745 is 54787500761.

It can be written as a sum of positive squares in 8 ways, for example, as 5415340921 + 11285237824 = 73589^2 + 106232^2 .

It is not a de Polignac number, because 16700578745 - 2¹⁰ = 16700577721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16700578693 and 16700578702.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98774 + ... + 207743.

It is an arithmetic number, because the mean of its divisors is an integer number (1328295753).

Almost surely, 2^16700578745 is an apocalyptic number.

It is an amenable number.

16700578745 is a deficient number, since it is larger than the sum of its proper divisors (4552153303).

16700578745 is a wasteful number, since it uses less digits than its factorization.

16700578745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307180.

The product of its (nonzero) digits is 1646400, while the sum is 50.

The spelling of 16700578745 in words is "sixteen billion, seven hundred million, five hundred seventy-eight thousand, seven hundred forty-five".