63436655645 has 16 divisors (see below), whose sum is σ = 83074325760. Its totient is φ = 46119096000.

The previous prime is 63436655641. The next prime is 63436655647. The reversal of 63436655645 is 54655663436.

63436655645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 63436655645 - 2² = 63436655641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63436655641) 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, 53381 + ... + 360170.

It is an arithmetic number, because the mean of its divisors is an integer number (5192145360).

Almost surely, 2^63436655645 is an apocalyptic number.

It is an amenable number.

63436655645 is a deficient number, since it is larger than the sum of its proper divisors (19637670115).

63436655645 is a wasteful number, since it uses less digits than its factorization.

63436655645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416356.

The product of its digits is 23328000, while the sum is 53.

The spelling of 63436655645 in words is "sixty-three billion, four hundred thirty-six million, six hundred fifty-five thousand, six hundred forty-five".