20387176148 has 24 divisors (see below), whose sum is σ = 35946133440. Its totient is φ = 10116901440.

The previous prime is 20387176099. The next prime is 20387176151. The reversal of 20387176148 is 84167178302.

It is a happy number.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3123128 + ... + 3129648.

It is an arithmetic number, because the mean of its divisors is an integer number (1497755560).

Almost surely, 2^20387176148 is an apocalyptic number.

It is an amenable number.

20387176148 is a deficient number, since it is larger than the sum of its proper divisors (15558957292).

20387176148 is a wasteful number, since it uses less digits than its factorization.

20387176148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12287 (or 12285 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 47.

The spelling of 20387176148 in words is "twenty billion, three hundred eighty-seven million, one hundred seventy-six thousand, one hundred forty-eight".