65877977331 has 12 divisors (see below), whose sum is σ = 96577334152. Its totient is φ = 43263148896.

The previous prime is 65877977279. The next prime is 65877977381. The reversal of 65877977331 is 13377977856.

It is not a de Polignac number, because 65877977331 - 2¹³ = 65877969139 is a prime.

It is a super-2 number, since 2×65877977331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65877977381) 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 11 ways as a sum of consecutive naturals, for example, 54624586 + ... + 54625791.

Almost surely, 2^65877977331 is an apocalyptic number.

65877977331 is a deficient number, since it is larger than the sum of its proper divisors (30699356821).

65877977331 is a wasteful number, since it uses less digits than its factorization.

65877977331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109250450 (or 109250447 counting only the distinct ones).

The product of its digits is 46675440, while the sum is 63.

The spelling of 65877977331 in words is "sixty-five billion, eight hundred seventy-seven million, nine hundred seventy-seven thousand, three hundred thirty-one".