67663635023 has 4 divisors (see below), whose sum is σ = 69103286880. Its totient is φ = 66223983168.

The previous prime is 67663635007. The next prime is 67663635037. The reversal of 67663635023 is 32053636676.

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 67663635023 - 2⁴ = 67663635007 is a prime.

It is a super-3 number, since 3×67663635023³ (a number of 33 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 1439651809 = 67663635023 / (6 + 7 + 6 + 6 + 3 + 6 + 3 + 5 + 0 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67663635073) 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, 719825858 + ... + 719825951.

It is an arithmetic number, because the mean of its divisors is an integer number (17275821720).

Almost surely, 2^67663635023 is an apocalyptic number.

67663635023 is a deficient number, since it is larger than the sum of its proper divisors (1439651857).

67663635023 is a wasteful number, since it uses less digits than its factorization.

67663635023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439651856.

The product of its (nonzero) digits is 2449440, while the sum is 47.

The spelling of 67663635023 in words is "sixty-seven billion, six hundred sixty-three million, six hundred thirty-five thousand, twenty-three".