64606243505503 has 16 divisors (see below), whose sum is σ = 75407022028800. Its totient is φ = 54198304482816.

The previous prime is 64606243505477. The next prime is 64606243505563. The reversal of 64606243505503 is 30550534260646.

It is a de Polignac number, because none of the positive numbers 2^k-64606243505503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64606243505563) 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, 129392950 + ... + 129891292.

It is an arithmetic number, because the mean of its divisors is an integer number (4712938876800).

Almost surely, 2^{64606243505503} is an apocalyptic number.

64606243505503 is a deficient number, since it is larger than the sum of its proper divisors (10800778523297).

64606243505503 is a wasteful number, since it uses less digits than its factorization.

64606243505503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892446.

The product of its (nonzero) digits is 7776000, while the sum is 49.

The spelling of 64606243505503 in words is "sixty-four trillion, six hundred six billion, two hundred forty-three million, five hundred five thousand, five hundred three".