20115014664 has 16 divisors (see below), whose sum is σ = 50287536720. Its totient is φ = 6705004880.

The previous prime is 20115014641. The next prime is 20115014693. The reversal of 20115014664 is 46641051102.

It is a super-2 number, since 2×20115014664² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419062782 + ... + 419062829.

It is an arithmetic number, because the mean of its divisors is an integer number (3142971045).

Almost surely, 2^20115014664 is an apocalyptic number.

20115014664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20115014664 is an abundant number, since it is smaller than the sum of its proper divisors (30172522056).

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

20115014664 is a wasteful number, since it uses less digits than its factorization.

20115014664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838125620 (or 838125616 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 20115014664 its reverse (46641051102), we get a palindrome (66756065766).

The spelling of 20115014664 in words is "twenty billion, one hundred fifteen million, fourteen thousand, six hundred sixty-four".