65749452977 has 16 divisors (see below), whose sum is σ = 75073864320. Its totient is φ = 57044259072.

The previous prime is 65749452971. The next prime is 65749453009. The reversal of 65749452977 is 77925494756.

It is a cyclic number.

It is not a de Polignac number, because 65749452977 - 2³² = 61454485681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65749452971) 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 15 ways as a sum of consecutive naturals, for example, 37973 + ... + 364610.

It is an arithmetic number, because the mean of its divisors is an integer number (4692116520).

Almost surely, 2^65749452977 is an apocalyptic number.

It is an amenable number.

65749452977 is a deficient number, since it is larger than the sum of its proper divisors (9324411343).

65749452977 is a wasteful number, since it uses less digits than its factorization.

65749452977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403352.

The product of its digits is 133358400, while the sum is 65.

The spelling of 65749452977 in words is "sixty-five billion, seven hundred forty-nine million, four hundred fifty-two thousand, nine hundred seventy-seven".