51341262361240 has 16 divisors (see below), whose sum is σ = 115517840312880. Its totient is φ = 20536504944480.

The previous prime is 51341262361211. The next prime is 51341262361271. The reversal of 51341262361240 is 4216326214315.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 1283531559031 = 51341262361240 / (5 + 1 + 3 + 4 + 1 + 2 + 6 + 2 + 3 + 6 + 1 + 2 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 51341262361193 and 51341262361202.

It is a congruent number.

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, 641765779476 + ... + 641765779555.

It is an arithmetic number, because the mean of its divisors is an integer number (7219865019555).

Almost surely, 2^{51341262361240} is an apocalyptic number.

It is an amenable number.

51341262361240 is an abundant number, since it is smaller than the sum of its proper divisors (64176577951640).

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

51341262361240 is a wasteful number, since it uses less digits than its factorization.

51341262361240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283531559042 (or 1283531559038 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

Adding to 51341262361240 its reverse (4216326214315), we get a palindrome (55557588575555).

The spelling of 51341262361240 in words is "fifty-one trillion, three hundred forty-one billion, two hundred sixty-two million, three hundred sixty-one thousand, two hundred forty".