16770520465 has 16 divisors (see below), whose sum is σ = 20460364560. Its totient is φ = 13192715520.

The previous prime is 16770520463. The next prime is 16770520471. The reversal of 16770520465 is 56402507761.

It can be written as a sum of positive squares in 8 ways, for example, as 7577354304 + 9193166161 = 87048^2 + 95881^2 .

It is not a de Polignac number, because 16770520465 - 2¹ = 16770520463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16770520463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1614067 + ... + 1624423.

It is an arithmetic number, because the mean of its divisors is an integer number (1278772785).

Almost surely, 2^16770520465 is an apocalyptic number.

It is an amenable number.

16770520465 is a deficient number, since it is larger than the sum of its proper divisors (3689844095).

16770520465 is a wasteful number, since it uses less digits than its factorization.

16770520465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15732.

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 16770520465 in words is "sixteen billion, seven hundred seventy million, five hundred twenty thousand, four hundred sixty-five".