51000103000 has 128 divisors (see below), whose sum is σ = 148788057600. Its totient is φ = 15896112000.

The previous prime is 51000102971. The next prime is 51000103019. The reversal of 51000103000 is 30100015.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 254170 + ... + 408169.

It is an arithmetic number, because the mean of its divisors is an integer number (1162406700).

Almost surely, 2^51000103000 is an apocalyptic number.

51000103000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51000103000 is an abundant number, since it is smaller than the sum of its proper divisors (97787954600).

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

51000103000 is a wasteful number, since it uses less digits than its factorization.

51000103000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662378 (or 662364 counting only the distinct ones).

The product of its (nonzero) digits is 15, while the sum is 10.

Adding to 51000103000 its reverse (30100015), we get a palindrome (51030203015).

The spelling of 51000103000 in words is "fifty-one billion, one hundred three thousand".