6501651002122 has 4 divisors (see below), whose sum is σ = 9752476503186. Its totient is φ = 3250825501060.

The previous prime is 6501651002117. The next prime is 6501651002191. The reversal of 6501651002122 is 2212001561056.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4889896338721 + 1611754663401 = 2211311^2 + 1269549^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1625412750529 + ... + 1625412750532.

Almost surely, 2^{6501651002122} is an apocalyptic number.

6501651002122 is a deficient number, since it is larger than the sum of its proper divisors (3250825501064).

6501651002122 is a wasteful number, since it uses less digits than its factorization.

6501651002122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3250825501063.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 6501651002122 its reverse (2212001561056), we get a palindrome (8713652563178).

The spelling of 6501651002122 in words is "six trillion, five hundred one billion, six hundred fifty-one million, two thousand, one hundred twenty-two".