6401115224663 has 4 divisors (see below), whose sum is σ = 6415000507608. Its totient is φ = 6387229941720.

The previous prime is 6401115224633. The next prime is 6401115224687. The reversal of 6401115224663 is 3664225111046.

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 6401115224663 - 2⁶ = 6401115224599 is a prime.

It is a super-2 number, since 2×6401115224663² (a number of 26 digits) contains 22 as substring.

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 6401115224663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6401115224633) 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, 6942640781 + ... + 6942641702.

It is an arithmetic number, because the mean of its divisors is an integer number (1603750126902).

Almost surely, 2^{6401115224663} is an apocalyptic number.

6401115224663 is a deficient number, since it is larger than the sum of its proper divisors (13885282945).

6401115224663 is a wasteful number, since it uses less digits than its factorization.

6401115224663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13885282944.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 6401115224663 in words is "six trillion, four hundred one billion, one hundred fifteen million, two hundred twenty-four thousand, six hundred sixty-three".