63201665385 has 48 divisors (see below), whose sum is σ = 114637071744. Its totient is φ = 32150486016.

The previous prime is 63201665383. The next prime is 63201665407. The reversal of 63201665385 is 58356610236.

63201665385 is a `hidden beast` number, since 6 + 3 + 201 + 6 + 65 + 385 = 666.

It is not a de Polignac number, because 63201665385 - 2¹ = 63201665383 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 63201665385.

It is not an unprimeable number, because it can be changed into a prime (63201665383) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 278862 + ... + 451848.

It is an arithmetic number, because the mean of its divisors is an integer number (2388272328).

Almost surely, 2^63201665385 is an apocalyptic number.

It is an amenable number.

63201665385 is a deficient number, since it is larger than the sum of its proper divisors (51435406359).

63201665385 is a wasteful number, since it uses less digits than its factorization.

63201665385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173374 (or 173371 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 63201665385 in words is "sixty-three billion, two hundred one million, six hundred sixty-five thousand, three hundred eighty-five".