203420642624 has 14 divisors (see below), whose sum is σ = 403662837834. Its totient is φ = 101710321280.

The previous prime is 203420642599. The next prime is 203420642671. The reversal of 203420642624 is 426246024302.

It can be written as a sum of positive squares in only one way, i.e., 203401000000 + 19642624 = 451000^2 + 4432^2 .

It is a super-2 number, since 2×203420642624² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1589223707 + ... + 1589223834.

Almost surely, 2^203420642624 is an apocalyptic number.

It is an amenable number.

203420642624 is a deficient number, since it is larger than the sum of its proper divisors (200242195210).

203420642624 is an equidigital number, since it uses as much as digits as its factorization.

203420642624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3178447553 (or 3178447543 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 35.

Adding to 203420642624 its reverse (426246024302), we get a palindrome (629666666926).

The spelling of 203420642624 in words is "two hundred three billion, four hundred twenty million, six hundred forty-two thousand, six hundred twenty-four".