1601464663563 has 8 divisors (see below), whose sum is σ = 2260891289808. Its totient is φ = 1004840573184.

The previous prime is 1601464663559. The next prime is 1601464663573. The reversal of 1601464663563 is 3653664641061.

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

It is not a de Polignac number, because 1601464663563 - 2² = 1601464663559 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 31401267913 = 1601464663563 / (1 + 6 + 0 + 1 + 4 + 6 + 4 + 6 + 6 + 3 + 5 + 6 + 3).

It is not an unprimeable number, because it can be changed into a prime (1601464663543) 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, 15700633906 + ... + 15700634007.

It is an arithmetic number, because the mean of its divisors is an integer number (282611411226).

Almost surely, 2^{1601464663563} is an apocalyptic number.

1601464663563 is a deficient number, since it is larger than the sum of its proper divisors (659426626245).

1601464663563 is a wasteful number, since it uses less digits than its factorization.

1601464663563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31401267933.

The product of its (nonzero) digits is 5598720, while the sum is 51.

The spelling of 1601464663563 in words is "one trillion, six hundred one billion, four hundred sixty-four million, six hundred sixty-three thousand, five hundred sixty-three".