51422351993288 has 8 divisors (see below), whose sum is σ = 96416909987430. Its totient is φ = 25711175996640.

The previous prime is 51422351993237. The next prime is 51422351993321. The reversal of 51422351993288 is 88239915322415.

It can be written as a sum of positive squares in only one way, i.e., 50274878268484 + 1147473724804 = 7090478^2 + 1071202^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×51422351993288² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51422351993288.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3213896999573 + ... + 3213896999588.

Almost surely, 2^{51422351993288} is an apocalyptic number.

It is an amenable number.

51422351993288 is a deficient number, since it is larger than the sum of its proper divisors (44994557994142).

51422351993288 is a wasteful number, since it uses less digits than its factorization.

51422351993288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6427793999167 (or 6427793999163 counting only the distinct ones).

The product of its digits is 37324800, while the sum is 62.

The spelling of 51422351993288 in words is "fifty-one trillion, four hundred twenty-two billion, three hundred fifty-one million, nine hundred ninety-three thousand, two hundred eighty-eight".