20120615310664 has 16 divisors (see below), whose sum is σ = 41155804044720. Its totient is φ = 9145734232080.

The previous prime is 20120615310581. The next prime is 20120615310671. The reversal of 20120615310664 is 46601351602102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114321677814 + ... + 114321677989.

It is an arithmetic number, because the mean of its divisors is an integer number (2572237752795).

Almost surely, 2^{20120615310664} is an apocalyptic number.

It is an amenable number.

20120615310664 is an abundant number, since it is smaller than the sum of its proper divisors (21035188734056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20120615310664 is a wasteful number, since it uses less digits than its factorization.

20120615310664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228643355820 (or 228643355816 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

Adding to 20120615310664 its reverse (46601351602102), we get a palindrome (66721966912766).

The spelling of 20120615310664 in words is "twenty trillion, one hundred twenty billion, six hundred fifteen million, three hundred ten thousand, six hundred sixty-four".