196390020465 has 24 divisors (see below), whose sum is σ = 360433450728. Its totient is φ = 98580088320.

The previous prime is 196390020439. The next prime is 196390020503. The reversal of 196390020465 is 564020093691.

196390020465 is a `hidden beast` number, since 1 + 9 + 639 + 0 + 0 + 2 + 0 + 4 + 6 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 54296456256 + 142093564209 = 233016^2 + 376953^2 .

It is not a de Polignac number, because 196390020465 - 2¹⁸ = 196389758321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 196390020465.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128358726 + ... + 128360255.

It is an arithmetic number, because the mean of its divisors is an integer number (15018060447).

Almost surely, 2^196390020465 is an apocalyptic number.

196390020465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

196390020465 is a deficient number, since it is larger than the sum of its proper divisors (164043430263).

196390020465 is a wasteful number, since it uses less digits than its factorization.

196390020465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256719009 (or 256719006 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 196390020465 in words is "one hundred ninety-six billion, three hundred ninety million, twenty thousand, four hundred sixty-five".