51335021121402 has 8 divisors (see below), whose sum is σ = 102670042242816. Its totient is φ = 17111673707132.

The previous prime is 51335021121337. The next prime is 51335021121409. The reversal of 51335021121402 is 20412112053315.

It is a happy number.

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

51335021121402 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 51335021121402.

It is not an unprimeable number, because it can be changed into a prime (51335021121409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4277918426778 + ... + 4277918426789.

It is an arithmetic number, because the mean of its divisors is an integer number (12833755280352).

Almost surely, 2^{51335021121402} is an apocalyptic number.

51335021121402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51335021121402 is a wasteful number, since it uses less digits than its factorization.

51335021121402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8555836853572.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 51335021121402 its reverse (20412112053315), we get a palindrome (71747133174717).

The spelling of 51335021121402 in words is "fifty-one trillion, three hundred thirty-five billion, twenty-one million, one hundred twenty-one thousand, four hundred two".