20315445135651 has 64 divisors (see below), whose sum is σ = 31460665674240. Its totient is φ = 12945740008320.

The previous prime is 20315445135649. The next prime is 20315445135659. The reversal of 20315445135651 is 15653154451302.

It is a happy number.

20315445135651 is a `hidden beast` number, since 2 + 0 + 3 + 1 + 544 + 5 + 1 + 3 + 56 + 51 = 666.

It is not a de Polignac number, because 20315445135651 - 2¹ = 20315445135649 is a prime.

It is a super-2 number, since 2×20315445135651² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20315445135597 and 20315445135606.

It is not an unprimeable number, because it can be changed into a prime (20315445135659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13223676 + ... + 14679798.

It is an arithmetic number, because the mean of its divisors is an integer number (491572901160).

Almost surely, 2^{20315445135651} is an apocalyptic number.

20315445135651 is a deficient number, since it is larger than the sum of its proper divisors (11145220538589).

20315445135651 is a wasteful number, since it uses less digits than its factorization.

20315445135651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456433 (or 1456427 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 45.

Adding to 20315445135651 its reverse (15653154451302), we get a palindrome (35968599586953).

The spelling of 20315445135651 in words is "twenty trillion, three hundred fifteen billion, four hundred forty-five million, one hundred thirty-five thousand, six hundred fifty-one".