65151516056 has 32 divisors (see below), whose sum is σ = 135523195200.
Its totient is φ = 29112385440.
The previous prime is 65151515981. The next prime is 65151516103. The reversal of 65151516056 is 65061515156.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6269030 + ... + 6279413.
It is an arithmetic number, because the mean of its divisors is an integer number (4235099850).
Almost surely, 265151516056 is an apocalyptic number.
It is an amenable number.
65151516056 is an abundant number, since it is smaller than the sum of its proper divisors (70371679144).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
65151516056 is a wasteful number, since it uses less digits than its factorization.
65151516056 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 12548519 (or 12548515 counting only the distinct ones).
The product of its (nonzero) digits is 135000, while the sum is 41.
The spelling of 65151516056 in words is "sixty-five billion, one hundred fifty-one million, five hundred sixteen thousand, fifty-six".