20118788562880 has 448 divisors, whose sum is σ = 57241147392000. Its totient is φ = 6591179243520.

The previous prime is 20118788562827. The next prime is 20118788562881. The reversal of 20118788562880 is 8826588781102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20118788562881) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9530453025 + ... + 9530455135.

Almost surely, 2^{20118788562880} is an apocalyptic number.

20118788562880 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 20118788562880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28620573696000).

20118788562880 is an abundant number, since it is smaller than the sum of its proper divisors (37122358829120).

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

20118788562880 is a wasteful number, since it uses less digits than its factorization.

20118788562880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4180 (or 4170 counting only the distinct ones).

The product of its (nonzero) digits is 27525120, while the sum is 64.

The spelling of 20118788562880 in words is "twenty trillion, one hundred eighteen billion, seven hundred eighty-eight million, five hundred sixty-two thousand, eight hundred eighty".