51602420616 has 32 divisors (see below), whose sum is σ = 129021806400. Its totient is φ = 17198706240.

The previous prime is 51602420609. The next prime is 51602420657. The reversal of 51602420616 is 61602420615.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76005 + ... + 330123.

It is an arithmetic number, because the mean of its divisors is an integer number (4031931450).

Almost surely, 2^51602420616 is an apocalyptic number.

It is an amenable number.

51602420616 is an abundant number, since it is smaller than the sum of its proper divisors (77419385784).

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

51602420616 is a wasteful number, since it uses less digits than its factorization.

51602420616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262589 (or 262585 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

Subtracting 51602420616 from its reverse (61602420615), we obtain a palindrome (9999999999).

The spelling of 51602420616 in words is "fifty-one billion, six hundred two million, four hundred twenty thousand, six hundred sixteen".