65678905512 has 96 divisors (see below), whose sum is σ = 200534846400. Its totient is φ = 19902690720.

The previous prime is 65678905483. The next prime is 65678905583. The reversal of 65678905512 is 21550987656.

65678905512 is a `hidden beast` number, since 6 + 5 + 6 + 7 + 89 + 0 + 551 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1230348 + ... + 1282619.

It is an arithmetic number, because the mean of its divisors is an integer number (2088904650).

Almost surely, 2^65678905512 is an apocalyptic number.

It is an amenable number.

65678905512 is an abundant number, since it is smaller than the sum of its proper divisors (134855940888).

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

65678905512 is a wasteful number, since it uses less digits than its factorization.

65678905512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2513004 (or 2512983 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 54.

The spelling of 65678905512 in words is "sixty-five billion, six hundred seventy-eight million, nine hundred five thousand, five hundred twelve".