51697132350 has 48 divisors (see below), whose sum is σ = 128318810880. Its totient is φ = 13774082400.

The previous prime is 51697132321. The next prime is 51697132351. The reversal of 51697132350 is 5323179615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51697132351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28491 + ... + 322809.

It is an arithmetic number, because the mean of its divisors is an integer number (2673308560).

Almost surely, 2^51697132350 is an apocalyptic number.

51697132350 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51697132350 is an abundant number, since it is smaller than the sum of its proper divisors (76621678530).

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

51697132350 is a wasteful number, since it uses less digits than its factorization.

51697132350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295505 (or 295500 counting only the distinct ones).

The product of its (nonzero) digits is 170100, while the sum is 42.

The spelling of 51697132350 in words is "fifty-one billion, six hundred ninety-seven million, one hundred thirty-two thousand, three hundred fifty".