20775367140 has 96 divisors (see below), whose sum is σ = 67192239744. Its totient is φ = 4740188160.

The previous prime is 20775367117. The next prime is 20775367141. The reversal of 20775367140 is 4176357702.

It is a junction number, because it is equal to n+sod(n) for n = 20775367092 and 20775367101.

It is not an unprimeable number, because it can be changed into a prime (20775367141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 914599 + ... + 937038.

It is an arithmetic number, because the mean of its divisors is an integer number (699919164).

Almost surely, 2^20775367140 is an apocalyptic number.

20775367140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20775367140 is an abundant number, since it is smaller than the sum of its proper divisors (46416872604).

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

20775367140 is a wasteful number, since it uses less digits than its factorization.

20775367140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851677 (or 1851675 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 42.

The spelling of 20775367140 in words is "twenty billion, seven hundred seventy-five million, three hundred sixty-seven thousand, one hundred forty".