64532498832649 has 16 divisors (see below), whose sum is σ = 69194542014720. Its totient is φ = 59966703763200.

The previous prime is 64532498832647. The next prime is 64532498832671. The reversal of 64532498832649 is 94623889423546.

It is a cyclic number.

It is not a de Polignac number, because 64532498832649 - 2¹ = 64532498832647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64532498832647) 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, 92983374 + ... + 93674824.

It is an arithmetic number, because the mean of its divisors is an integer number (4324658875920).

Almost surely, 2^{64532498832649} is an apocalyptic number.

It is an amenable number.

64532498832649 is a deficient number, since it is larger than the sum of its proper divisors (4662043182071).

64532498832649 is a wasteful number, since it uses less digits than its factorization.

64532498832649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761040.

The product of its digits is 2149908480, while the sum is 73.

The spelling of 64532498832649 in words is "sixty-four trillion, five hundred thirty-two billion, four hundred ninety-eight million, eight hundred thirty-two thousand, six hundred forty-nine".