20315111303660 has 24 divisors (see below), whose sum is σ = 42689599075536. Its totient is φ = 8120736838080.

The previous prime is 20315111303653. The next prime is 20315111303687. The reversal of 20315111303660 is 6630311151302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331698827 + ... + 331760066.

It is an arithmetic number, because the mean of its divisors is an integer number (1778733294814).

Almost surely, 2^{20315111303660} is an apocalyptic number.

20315111303660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20315111303660 is an abundant number, since it is smaller than the sum of its proper divisors (22374487771876).

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

20315111303660 is a wasteful number, since it uses less digits than its factorization.

20315111303660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663460433 (or 663460431 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

Adding to 20315111303660 its reverse (6630311151302), we get a palindrome (26945422454962).

The spelling of 20315111303660 in words is "twenty trillion, three hundred fifteen billion, one hundred eleven million, three hundred three thousand, six hundred sixty".