51630845900 has 18 divisors (see below), whose sum is σ = 112038935820. Its totient is φ = 20652338320.

The previous prime is 51630845801. The next prime is 51630845941. The reversal of 51630845900 is 954803615.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 258154130 + ... + 258154329.

Almost surely, 2^51630845900 is an apocalyptic number.

51630845900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51630845900 is an abundant number, since it is smaller than the sum of its proper divisors (60408089920).

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

51630845900 is a wasteful number, since it uses less digits than its factorization.

51630845900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516308473 (or 516308466 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 51630845900 in words is "fifty-one billion, six hundred thirty million, eight hundred forty-five thousand, nine hundred".