623513210453 has 8 divisors (see below), whose sum is σ = 727129108800. Its totient is φ = 534439894380.

The previous prime is 623513210371. The next prime is 623513210477. The reversal of 623513210453 is 354012315326.

It is a happy number.

It is not a de Polignac number, because 623513210453 - 2²² = 623509016149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623513218453) 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, 908911043 + ... + 908911728.

It is an arithmetic number, because the mean of its divisors is an integer number (90891138600).

Almost surely, 2^623513210453 is an apocalyptic number.

It is an amenable number.

623513210453 is a deficient number, since it is larger than the sum of its proper divisors (103615898347).

623513210453 is an equidigital number, since it uses as much as digits as its factorization.

623513210453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1817822792 (or 1817822778 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 623513210453 its reverse (354012315326), we get a palindrome (977525525779).

The spelling of 623513210453 in words is "six hundred twenty-three billion, five hundred thirteen million, two hundred ten thousand, four hundred fifty-three".