6401366164651 has 8 divisors (see below), whose sum is σ = 6409609178544. Its totient is φ = 6393124955520.

The previous prime is 6401366164643. The next prime is 6401366164679. The reversal of 6401366164651 is 1564616631046.

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

It is a cyclic number.

It is not a de Polignac number, because 6401366164651 - 2³ = 6401366164643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6401366164595 and 6401366164604.

It is not an unprimeable number, because it can be changed into a prime (6401366164451) 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, 6720511 + ... + 7613671.

It is an arithmetic number, because the mean of its divisors is an integer number (801201147318).

Almost surely, 2^{6401366164651} is an apocalyptic number.

6401366164651 is a deficient number, since it is larger than the sum of its proper divisors (8243013893).

6401366164651 is an equidigital number, since it uses as much as digits as its factorization.

6401366164651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902381.

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 6401366164651 in words is "six trillion, four hundred one billion, three hundred sixty-six million, one hundred sixty-four thousand, six hundred fifty-one".