401234543653 has 4 divisors (see below), whose sum is σ = 401236563520. Its totient is φ = 401232523788.

The previous prime is 401234543573. The next prime is 401234543669. The reversal of 401234543653 is 356345432104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 401234543653 - 2²¹ = 401232446501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401234543453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 674925 + ... + 1121602.

It is an arithmetic number, because the mean of its divisors is an integer number (100309140880).

Almost surely, 2^401234543653 is an apocalyptic number.

It is an amenable number.

401234543653 is a deficient number, since it is larger than the sum of its proper divisors (2019867).

401234543653 is a wasteful number, since it uses less digits than its factorization.

401234543653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2019866.

The product of its (nonzero) digits is 518400, while the sum is 40.

Adding to 401234543653 its reverse (356345432104), we get a palindrome (757579975757).

The spelling of 401234543653 in words is "four hundred one billion, two hundred thirty-four million, five hundred forty-three thousand, six hundred fifty-three".