65769890864 has 20 divisors (see below), whose sum is σ = 128742869304. Its totient is φ = 32545924608.

The previous prime is 65769890863. The next prime is 65769890881. The reversal of 65769890864 is 46809896756.

It is a junction number, because it is equal to n+sod(n) for n = 65769890794 and 65769890803.

It is not an unprimeable number, because it can be changed into a prime (65769890863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21187202 + ... + 21190305.

Almost surely, 2^65769890864 is an apocalyptic number.

It is an amenable number.

65769890864 is a deficient number, since it is larger than the sum of its proper divisors (62972978440).

65769890864 is a wasteful number, since it uses less digits than its factorization.

65769890864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42377612 (or 42377606 counting only the distinct ones).

The product of its (nonzero) digits is 156764160, while the sum is 68.

The spelling of 65769890864 in words is "sixty-five billion, seven hundred sixty-nine million, eight hundred ninety thousand, eight hundred sixty-four".