3640642460463 has 8 divisors (see below), whose sum is σ = 5109673628800. Its totient is φ = 2299353132888.

The previous prime is 3640642460443. The next prime is 3640642460489.

It is a happy number.

3640642460463 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3640642460463 - 2²⁰ = 3640641411887 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 (3640642460443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31935460123 + ... + 31935460236.

It is an arithmetic number, because the mean of its divisors is an integer number (638709203600).

Almost surely, 2^{3640642460463} is an apocalyptic number.

3640642460463 is a deficient number, since it is larger than the sum of its proper divisors (1469031168337).

3640642460463 is a wasteful number, since it uses less digits than its factorization.

3640642460463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63870920381.

The product of its (nonzero) digits is 5971968, while the sum is 48.

The spelling of 3640642460463 in words is "three trillion, six hundred forty billion, six hundred forty-two million, four hundred sixty thousand, four hundred sixty-three".