20011219080 has 64 divisors (see below), whose sum is σ = 60369105600. Its totient is φ = 5306507520.

The previous prime is 20011219079. The next prime is 20011219091. The reversal of 20011219080 is 8091211002.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 20011219080.

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, 444331 + ... + 487290.

It is an arithmetic number, because the mean of its divisors is an integer number (943267275).

Almost surely, 2^20011219080 is an apocalyptic number.

20011219080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011219080 is an abundant number, since it is smaller than the sum of its proper divisors (40357886520).

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

20011219080 is a wasteful number, since it uses less digits than its factorization.

20011219080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931814 (or 931810 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 24.

The spelling of 20011219080 in words is "twenty billion, eleven million, two hundred nineteen thousand, eighty".