20775515372 has 12 divisors (see below), whose sum is σ = 36717124416. Its totient is φ = 10284908400.

The previous prime is 20775515347. The next prime is 20775515377. The reversal of 20775515372 is 27351557702.

It is not an unprimeable number, because it can be changed into a prime (20775515377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25711868 + ... + 25712675.

It is an arithmetic number, because the mean of its divisors is an integer number (3059760368).

Almost surely, 2^20775515372 is an apocalyptic number.

It is an amenable number.

20775515372 is a deficient number, since it is larger than the sum of its proper divisors (15941609044).

20775515372 is a wasteful number, since it uses less digits than its factorization.

20775515372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51424648 (or 51424646 counting only the distinct ones).

The product of its (nonzero) digits is 514500, while the sum is 44.

The spelling of 20775515372 in words is "twenty billion, seven hundred seventy-five million, five hundred fifteen thousand, three hundred seventy-two".