51140450402 has 8 divisors (see below), whose sum is σ = 77054670336. Its totient is φ = 25455560292.

The previous prime is 51140450377. The next prime is 51140450423. The reversal of 51140450402 is 20405404115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 57331898 + ... + 57332789.

It is an arithmetic number, because the mean of its divisors is an integer number (9631833792).

Almost surely, 2^51140450402 is an apocalyptic number.

51140450402 is a deficient number, since it is larger than the sum of its proper divisors (25914219934).

51140450402 is a wasteful number, since it uses less digits than its factorization.

51140450402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114664912.

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 51140450402 its reverse (20405404115), we get a palindrome (71545854517).

The spelling of 51140450402 in words is "fifty-one billion, one hundred forty million, four hundred fifty thousand, four hundred two".