64854392812 has 12 divisors (see below), whose sum is σ = 123812931816. Its totient is φ = 29479269440.

The previous prime is 64854392791. The next prime is 64854392821. The reversal of 64854392812 is 21829345846.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 64854392812.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 736981693 + ... + 736981780.

It is an arithmetic number, because the mean of its divisors is an integer number (10317744318).

Almost surely, 2^64854392812 is an apocalyptic number.

It is an amenable number.

64854392812 is a deficient number, since it is larger than the sum of its proper divisors (58958539004).

64854392812 is a wasteful number, since it uses less digits than its factorization.

64854392812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473963488 (or 1473963486 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 52.

The spelling of 64854392812 in words is "sixty-four billion, eight hundred fifty-four million, three hundred ninety-two thousand, eight hundred twelve".