3640734370463 has 4 divisors (see below), whose sum is σ = 3643494594960. Its totient is φ = 3637974145968.

The previous prime is 3640734370453. The next prime is 3640734370487.

3640734370463 is nontrivially palindromic in base 10.

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 3640734370463 - 2¹⁶ = 3640734304927 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 (3640734370453) 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, 1380110270 + ... + 1380112907.

It is an arithmetic number, because the mean of its divisors is an integer number (910873648740).

Almost surely, 2^{3640734370463} is an apocalyptic number.

3640734370463 is a deficient number, since it is larger than the sum of its proper divisors (2760224497).

3640734370463 is a wasteful number, since it uses less digits than its factorization.

3640734370463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2760224496.

The product of its (nonzero) digits is 9144576, while the sum is 50.

The spelling of 3640734370463 in words is "three trillion, six hundred forty billion, seven hundred thirty-four million, three hundred seventy thousand, four hundred sixty-three".