20395394316428 has 24 divisors (see below), whose sum is σ = 36507164605632. Its totient is φ = 9965440400384.

The previous prime is 20395394316389. The next prime is 20395394316443. The reversal of 20395394316428 is 82461349359302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82944725 + ... + 83190252.

It is an arithmetic number, because the mean of its divisors is an integer number (1521131858568).

Almost surely, 2^{20395394316428} is an apocalyptic number.

It is an amenable number.

20395394316428 is a deficient number, since it is larger than the sum of its proper divisors (16111770289204).

20395394316428 is a wasteful number, since it uses less digits than its factorization.

20395394316428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166135681 (or 166135679 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 59.

The spelling of 20395394316428 in words is "twenty trillion, three hundred ninety-five billion, three hundred ninety-four million, three hundred sixteen thousand, four hundred twenty-eight".