51064242340 has 24 divisors (see below), whose sum is σ = 107257764600. Its totient is φ = 20421343488.

The previous prime is 51064242253. The next prime is 51064242389. The reversal of 51064242340 is 4324246015.

It can be written as a sum of positive squares in 4 ways, for example, as 4708429924 + 46355812416 = 68618^2 + 215304^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175065 + ... + 364384.

It is an arithmetic number, because the mean of its divisors is an integer number (4469073525).

Almost surely, 2^51064242340 is an apocalyptic number.

It is an amenable number.

51064242340 is an abundant number, since it is smaller than the sum of its proper divisors (56193522260).

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

51064242340 is a wasteful number, since it uses less digits than its factorization.

51064242340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544191 (or 544189 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 51064242340 its reverse (4324246015), we get a palindrome (55388488355).

The spelling of 51064242340 in words is "fifty-one billion, sixty-four million, two hundred forty-two thousand, three hundred forty".