51235421300 has 36 divisors (see below), whose sum is σ = 127063846560. Its totient is φ = 17566429920.

The previous prime is 51235421297. The next prime is 51235421311. The reversal of 51235421300 is 312453215.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 51235421300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36596030 + ... + 36597429.

Almost surely, 2^51235421300 is an apocalyptic number.

51235421300 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51235421300 is an abundant number, since it is smaller than the sum of its proper divisors (75828425260).

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

51235421300 is a wasteful number, since it uses less digits than its factorization.

51235421300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73193480 (or 73193473 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 51235421300 its reverse (312453215), we get a palindrome (51547874515).

The spelling of 51235421300 in words is "fifty-one billion, two hundred thirty-five million, four hundred twenty-one thousand, three hundred".