64550041534403 has 4 divisors (see below), whose sum is σ = 64839503604288. Its totient is φ = 64260579464520.

The previous prime is 64550041534367. The next prime is 64550041534409. The reversal of 64550041534403 is 30443514005546.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64550041534403 - 2²⁶ = 64549974425539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64550041534409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144731034608 + ... + 144731035053.

It is an arithmetic number, because the mean of its divisors is an integer number (16209875901072).

Almost surely, 2^{64550041534403} is an apocalyptic number.

64550041534403 is a deficient number, since it is larger than the sum of its proper divisors (289462069885).

64550041534403 is a wasteful number, since it uses less digits than its factorization.

64550041534403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289462069884.

The product of its (nonzero) digits is 1728000, while the sum is 44.

Adding to 64550041534403 its reverse (30443514005546), we get a palindrome (94993555539949).

The spelling of 64550041534403 in words is "sixty-four trillion, five hundred fifty billion, forty-one million, five hundred thirty-four thousand, four hundred three".