51260000208 has 80 divisors (see below), whose sum is σ = 133250995200. Its totient is φ = 16979853312.

The previous prime is 51260000191. The next prime is 51260000221. The reversal of 51260000208 is 80200006215.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10678993 + ... + 10683791.

It is an arithmetic number, because the mean of its divisors is an integer number (1665637440).

Almost surely, 2^51260000208 is an apocalyptic number.

It is an amenable number.

51260000208 is an abundant number, since it is smaller than the sum of its proper divisors (81990994992).

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

51260000208 is a wasteful number, since it uses less digits than its factorization.

With its successor (51260000209) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (6156).

51260000208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6156 (or 6150 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The spelling of 51260000208 in words is "fifty-one billion, two hundred sixty million, two hundred eight", and thus it is an aban number.