20720910120 has 64 divisors (see below), whose sum is σ = 62298918720. Its totient is φ = 5513470464.

The previous prime is 20720910109. The next prime is 20720910121. The reversal of 20720910120 is 2101902702.

It is a super-2 number, since 2×20720910120² (a number of 21 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (20720910121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134082 + ... + 243761.

It is an arithmetic number, because the mean of its divisors is an integer number (973420605).

Almost surely, 2^20720910120 is an apocalyptic number.

20720910120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20720910120 is an abundant number, since it is smaller than the sum of its proper divisors (41578008600).

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

20720910120 is a wasteful number, since it uses less digits than its factorization.

20720910120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378314 (or 378310 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The spelling of 20720910120 in words is "twenty billion, seven hundred twenty million, nine hundred ten thousand, one hundred twenty".