51140321354 has 4 divisors (see below), whose sum is σ = 76710482034. Its totient is φ = 25570160676.

The previous prime is 51140321291. The next prime is 51140321363. The reversal of 51140321354 is 45312304115.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 41790398329 + 9349923025 = 204427^2 + 96695^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12785080337 + ... + 12785080340.

Almost surely, 2^51140321354 is an apocalyptic number.

51140321354 is a deficient number, since it is larger than the sum of its proper divisors (25570160680).

51140321354 is a wasteful number, since it uses less digits than its factorization.

51140321354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25570160679.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 51140321354 its reverse (45312304115), we get a palindrome (96452625469).

The spelling of 51140321354 in words is "fifty-one billion, one hundred forty million, three hundred twenty-one thousand, three hundred fifty-four".