3646520256463 has 8 divisors (see below), whose sum is σ = 4171264586528. Its totient is φ = 3122729142624.

The previous prime is 3646520256443. The next prime is 3646520256481.

3646520256463 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 3646520256463 - 2¹³ = 3646520248271 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3646520256463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3646520256413) 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, 238295856 + ... + 238311157.

It is an arithmetic number, because the mean of its divisors is an integer number (521408073316).

Almost surely, 2^{3646520256463} is an apocalyptic number.

3646520256463 is a deficient number, since it is larger than the sum of its proper divisors (524744330065).

3646520256463 is a wasteful number, since it uses less digits than its factorization.

3646520256463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476608113.

The product of its (nonzero) digits is 18662400, while the sum is 52.

The spelling of 3646520256463 in words is "three trillion, six hundred forty-six billion, five hundred twenty million, two hundred fifty-six thousand, four hundred sixty-three".