20319725486 has 4 divisors (see below), whose sum is σ = 30479588232. Its totient is φ = 10159862742.

The previous prime is 20319725483. The next prime is 20319725509. The reversal of 20319725486 is 68452791302.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20319725486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20319725483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5079931370 + ... + 5079931373.

It is an arithmetic number, because the mean of its divisors is an integer number (7619897058).

It is a 1-persistent number, because it is pandigital, but 2⋅20319725486 = 40639450972 is not.

Almost surely, 2^20319725486 is an apocalyptic number.

20319725486 is a deficient number, since it is larger than the sum of its proper divisors (10159862746).

20319725486 is a wasteful number, since it uses less digits than its factorization.

20319725486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10159862745.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 20319725486 in words is "twenty billion, three hundred nineteen million, seven hundred twenty-five thousand, four hundred eighty-six".