51012005242 has 8 divisors (see below), whose sum is σ = 83474190432. Its totient is φ = 23187275100.

The previous prime is 51012005221. The next prime is 51012005273. The reversal of 51012005242 is 24250021015.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 2318727511 = 51012005242 / (5 + 1 + 0 + 1 + 2 + 0 + 0 + 5 + 2 + 4 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1159363734 + ... + 1159363777.

It is an arithmetic number, because the mean of its divisors is an integer number (10434273804).

Almost surely, 2^51012005242 is an apocalyptic number.

51012005242 is a deficient number, since it is larger than the sum of its proper divisors (32462185190).

51012005242 is a wasteful number, since it uses less digits than its factorization.

51012005242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2318727524.

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 51012005242 its reverse (24250021015), we get a palindrome (75262026257).

The spelling of 51012005242 in words is "fifty-one billion, twelve million, five thousand, two hundred forty-two".