20178879052 has 12 divisors (see below), whose sum is σ = 35529683896. Its totient is φ = 10027540800.

The previous prime is 20178879013. The next prime is 20178879101. The reversal of 20178879052 is 25097887102.

It is a junction number, because it is equal to n+sod(n) for n = 20178878987 and 20178879005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15473949 + ... + 15475252.

Almost surely, 2^20178879052 is an apocalyptic number.

It is an amenable number.

20178879052 is a deficient number, since it is larger than the sum of its proper divisors (15350804844).

20178879052 is a wasteful number, since it uses less digits than its factorization.

20178879052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30949368 (or 30949366 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 49.

The spelling of 20178879052 in words is "twenty billion, one hundred seventy-eight million, eight hundred seventy-nine thousand, fifty-two".