51687367350 has 24 divisors (see below), whose sum is σ = 128184671400. Its totient is φ = 13783297920.

The previous prime is 51687367349. The next prime is 51687367373. The reversal of 51687367350 is 5376378615.

It is a junction number, because it is equal to n+sod(n) for n = 51687367293 and 51687367302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172291075 + ... + 172291374.

It is an arithmetic number, because the mean of its divisors is an integer number (5341027975).

Almost surely, 2^51687367350 is an apocalyptic number.

51687367350 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51687367350 is an abundant number, since it is smaller than the sum of its proper divisors (76497304050).

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

51687367350 is a wasteful number, since it uses less digits than its factorization.

51687367350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344582464 (or 344582459 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 51.

The spelling of 51687367350 in words is "fifty-one billion, six hundred eighty-seven million, three hundred sixty-seven thousand, three hundred fifty".