20315252423012 has 6 divisors (see below), whose sum is σ = 35551691740278. Its totient is φ = 10157626211504.

The previous prime is 20315252422967. The next prime is 20315252423051. The reversal of 20315252423012 is 21032425251302.

It can be written as a sum of positive squares in only one way, i.e., 14235408264256 + 6079844158756 = 3772984^2 + 2465734^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20315252423012.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2539406552873 + ... + 2539406552880.

It is an arithmetic number, because the mean of its divisors is an integer number (5925281956713).

Almost surely, 2^{20315252423012} is an apocalyptic number.

It is an amenable number.

20315252423012 is a deficient number, since it is larger than the sum of its proper divisors (15236439317266).

20315252423012 is a wasteful number, since it uses less digits than its factorization.

20315252423012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5078813105757 (or 5078813105755 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 20315252423012 its reverse (21032425251302), we get a palindrome (41347677674314).

The spelling of 20315252423012 in words is "twenty trillion, three hundred fifteen billion, two hundred fifty-two million, four hundred twenty-three thousand, twelve".