51507105650 has 96 divisors (see below), whose sum is σ = 128631017088. Its totient is φ = 14819212800.

The previous prime is 51507105613. The next prime is 51507105653. The reversal of 51507105650 is 5650170515.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 51507105650.

It is not an unprimeable number, because it can be changed into a prime (51507105653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 464507 + ... + 564606.

It is an arithmetic number, because the mean of its divisors is an integer number (1339906428).

Almost surely, 2^51507105650 is an apocalyptic number.

51507105650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51507105650 is an abundant number, since it is smaller than the sum of its proper divisors (77123911438).

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

51507105650 is a wasteful number, since it uses less digits than its factorization.

51507105650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029156 (or 1029151 counting only the distinct ones).

The product of its (nonzero) digits is 26250, while the sum is 35.

The spelling of 51507105650 in words is "fifty-one billion, five hundred seven million, one hundred five thousand, six hundred fifty".