401646243513 has 8 divisors (see below), whose sum is σ = 537929797888. Its totient is φ = 266563425744.

The previous prime is 401646243511. The next prime is 401646243517. The reversal of 401646243513 is 315342646104.

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

It is not a de Polignac number, because 401646243513 - 2¹ = 401646243511 is a prime.

It is a super-2 number, since 2×401646243513² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401646243511) 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, 300183370 + ... + 300184707.

It is an arithmetic number, because the mean of its divisors is an integer number (67241224736).

Almost surely, 2^401646243513 is an apocalyptic number.

It is an amenable number.

401646243513 is a deficient number, since it is larger than the sum of its proper divisors (136283554375).

401646243513 is a wasteful number, since it uses less digits than its factorization.

401646243513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600368303.

The product of its (nonzero) digits is 207360, while the sum is 39.

Adding to 401646243513 its reverse (315342646104), we get a palindrome (716988889617).

The spelling of 401646243513 in words is "four hundred one billion, six hundred forty-six million, two hundred forty-three thousand, five hundred thirteen".