20319157216 has 12 divisors (see below), whose sum is σ = 40003340832. Its totient is φ = 10159578592.

The previous prime is 20319157211. The next prime is 20319157249. The reversal of 20319157216 is 61275191302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20319157211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317486800 + ... + 317486863.

It is an arithmetic number, because the mean of its divisors is an integer number (3333611736).

Almost surely, 2^20319157216 is an apocalyptic number.

It is an amenable number.

20319157216 is a deficient number, since it is larger than the sum of its proper divisors (19684183616).

20319157216 is an equidigital number, since it uses as much as digits as its factorization.

20319157216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634973673 (or 634973665 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 37.

The spelling of 20319157216 in words is "twenty billion, three hundred nineteen million, one hundred fifty-seven thousand, two hundred sixteen".