20511760080 has 480 divisors, whose sum is σ = 79242928128. Its totient is φ = 4294425600.

The previous prime is 20511760067. The next prime is 20511760103. The reversal of 20511760080 is 8006711502.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 18800335 + ... + 18801425.

Almost surely, 2^20511760080 is an apocalyptic number.

20511760080 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 20511760080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39621464064).

20511760080 is an abundant number, since it is smaller than the sum of its proper divisors (58731168048).

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

20511760080 is a wasteful number, since it uses less digits than its factorization.

20511760080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183 (or 1158 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The spelling of 20511760080 in words is "twenty billion, five hundred eleven million, seven hundred sixty thousand, eighty".