51157103750 has 40 divisors (see below), whose sum is σ = 96230777544. Its totient is φ = 20389880000.

The previous prime is 51157103747. The next prime is 51157103771. The reversal of 51157103750 is 5730175115.

It is a self number, because there is not a number n which added to its sum of digits gives 51157103750.

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 278429 + ... + 424071.

Almost surely, 2^51157103750 is an apocalyptic number.

51157103750 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51157103750 is a deficient number, since it is larger than the sum of its proper divisors (45073673794).

51157103750 is a wasteful number, since it uses less digits than its factorization.

51157103750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145946 (or 145931 counting only the distinct ones).

The product of its (nonzero) digits is 18375, while the sum is 35.

Adding to 51157103750 its reverse (5730175115), we get a palindrome (56887278865).

The spelling of 51157103750 in words is "fifty-one billion, one hundred fifty-seven million, one hundred three thousand, seven hundred fifty".