51511203496 has 8 divisors (see below), whose sum is σ = 96583506570. Its totient is φ = 25755601744.

The previous prime is 51511203473. The next prime is 51511203503. The reversal of 51511203496 is 69430211515.

It can be written as a sum of positive squares in only one way, i.e., 33127640100 + 18383563396 = 182010^2 + 135586^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3219450211 + ... + 3219450226.

Almost surely, 2^51511203496 is an apocalyptic number.

It is an amenable number.

51511203496 is a deficient number, since it is larger than the sum of its proper divisors (45072303074).

51511203496 is a wasteful number, since it uses less digits than its factorization.

51511203496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6438900443 (or 6438900439 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 51511203496 in words is "fifty-one billion, five hundred eleven million, two hundred three thousand, four hundred ninety-six".