65977911239667 has 48 divisors (see below), whose sum is σ = 109016858885760. Its totient is φ = 35287035654528.

The previous prime is 65977911239549. The next prime is 65977911239677. The reversal of 65977911239667 is 76693211977956.

It is not a de Polignac number, because 65977911239667 - 2⁸ = 65977911239411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65977911239592 and 65977911239601.

It is not an unprimeable number, because it can be changed into a prime (65977911239677) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 142072978 + ... + 142536615.

It is an arithmetic number, because the mean of its divisors is an integer number (2271184560120).

Almost surely, 2^{65977911239667} is an apocalyptic number.

65977911239667 is a deficient number, since it is larger than the sum of its proper divisors (43038947646093).

65977911239667 is a wasteful number, since it uses less digits than its factorization.

65977911239667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284609712 (or 284609705 counting only the distinct ones).

The product of its digits is 1620304560, while the sum is 78.

The spelling of 65977911239667 in words is "sixty-five trillion, nine hundred seventy-seven billion, nine hundred eleven million, two hundred thirty-nine thousand, six hundred sixty-seven".