20712411720 has 2048 divisors, whose sum is σ = 104509440000. Its totient is φ = 3576545280.

The previous prime is 20712411653. The next prime is 20712411751. The reversal of 20712411720 is 2711421702.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 511 ways as a sum of consecutive naturals, for example, 900539629 + ... + 900539651.

It is an arithmetic number, because the mean of its divisors is an integer number (51030000).

Almost surely, 2^20712411720 is an apocalyptic number.

20712411720 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 20712411720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52254720000).

20712411720 is an abundant number, since it is smaller than the sum of its proper divisors (83797028280).

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

20712411720 is a wasteful number, since it uses less digits than its factorization.

20712411720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The spelling of 20712411720 in words is "twenty billion, seven hundred twelve million, four hundred eleven thousand, seven hundred twenty".