68434100500 has 48 divisors (see below), whose sum is σ = 151910308368. Its totient is φ = 26924880000.

The previous prime is 68434100489. The next prime is 68434100507. The reversal of 68434100500 is 500143486.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 59733315216 + 8700785284 = 244404^2 + 93278^2 .

It is a super-2 number, since 2×68434100500² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68434100507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1091371 + ... + 1152370.

It is an arithmetic number, because the mean of its divisors is an integer number (3164798091).

Almost surely, 2^68434100500 is an apocalyptic number.

It is an amenable number.

68434100500 is an abundant number, since it is smaller than the sum of its proper divisors (83476207868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68434100500 is a wasteful number, since it uses less digits than its factorization.

68434100500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2243821 (or 2243809 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 68434100500 its reverse (500143486), we get a palindrome (68934243986).

The spelling of 68434100500 in words is "sixty-eight billion, four hundred thirty-four million, one hundred thousand, five hundred".