65077866945 has 96 divisors (see below), whose sum is σ = 139182511104. Its totient is φ = 27392256000.

The previous prime is 65077866937. The next prime is 65077866947. The reversal of 65077866945 is 54966877056.

65077866945 is a `hidden beast` number, since 6 + 507 + 7 + 86 + 6 + 9 + 45 = 666.

It is not a de Polignac number, because 65077866945 - 2³ = 65077866937 is a prime.

It is a super-3 number, since 3×65077866945³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (65077866947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1622280 + ... + 1661910.

It is an arithmetic number, because the mean of its divisors is an integer number (1449817824).

Almost surely, 2^65077866945 is an apocalyptic number.

65077866945 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

65077866945 is an abundant number, since it is smaller than the sum of its proper divisors (74104644159).

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

65077866945 is a wasteful number, since it uses less digits than its factorization.

65077866945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40063 (or 40060 counting only the distinct ones).

The product of its (nonzero) digits is 76204800, while the sum is 63.

The spelling of 65077866945 in words is "sixty-five billion, seventy-seven million, eight hundred sixty-six thousand, nine hundred forty-five".