64632804461 has 4 divisors (see below), whose sum is σ = 66379637052. Its totient is φ = 62885971872.

The previous prime is 64632804329. The next prime is 64632804529. The reversal of 64632804461 is 16440823646.

64632804461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 25742598025 + 38890206436 = 160445^2 + 197206^2 .

It is a cyclic number.

It is not a de Polignac number, because 64632804461 - 2²² = 64628610157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64632800461) 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, 873416240 + ... + 873416313.

It is an arithmetic number, because the mean of its divisors is an integer number (16594909263).

Almost surely, 2^64632804461 is an apocalyptic number.

It is an amenable number.

64632804461 is a deficient number, since it is larger than the sum of its proper divisors (1746832591).

64632804461 is a wasteful number, since it uses less digits than its factorization.

64632804461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746832590.

The product of its (nonzero) digits is 663552, while the sum is 44.

The spelling of 64632804461 in words is "sixty-four billion, six hundred thirty-two million, eight hundred four thousand, four hundred sixty-one".