20601218880780 has 48 divisors (see below), whose sum is σ = 57713009608800. Its totient is φ = 5490839630848.

The previous prime is 20601218880773. The next prime is 20601218880833. The reversal of 20601218880780 is 8708881210602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87967629 + ... + 88201508.

It is an arithmetic number, because the mean of its divisors is an integer number (1202354366850).

Almost surely, 2^{20601218880780} is an apocalyptic number.

20601218880780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20601218880780 is an abundant number, since it is smaller than the sum of its proper divisors (37111790728020).

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

20601218880780 is a wasteful number, since it uses less digits than its factorization.

20601218880780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176171098 (or 176171096 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 51.

The spelling of 20601218880780 in words is "twenty trillion, six hundred one billion, two hundred eighteen million, eight hundred eighty thousand, seven hundred eighty".