20077699111680 has 432 divisors, whose sum is σ = 75723943986432. Its totient is φ = 4441144320000.

The previous prime is 20077699111669. The next prime is 20077699111727. The reversal of 20077699111680 is 8611199677002.

It is a super-2 number, since 2×20077699111680² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20077699111680.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25443055 + ... + 26220305.

It is an arithmetic number, because the mean of its divisors is an integer number (175286907376).

Almost surely, 2^{20077699111680} is an apocalyptic number.

20077699111680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20077699111680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37861971993216).

20077699111680 is an abundant number, since it is smaller than the sum of its proper divisors (55646244874752).

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

20077699111680 is an equidigital number, since it uses as much as digits as its factorization.

20077699111680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777344 (or 777299 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 57.

The spelling of 20077699111680 in words is "twenty trillion, seventy-seven billion, six hundred ninety-nine million, one hundred eleven thousand, six hundred eighty".