187001272648 has 8 divisors (see below), whose sum is σ = 350627386230. Its totient is φ = 93500636320.

The previous prime is 187001272639. The next prime is 187001272651. The reversal of 187001272648 is 846272100781.

It can be written as a sum of positive squares in only one way, i.e., 137538623044 + 49462649604 = 370862^2 + 222402^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 187001272598 and 187001272607.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 11687579533 + ... + 11687579548.

Almost surely, 2^187001272648 is an apocalyptic number.

It is an amenable number.

187001272648 is a deficient number, since it is larger than the sum of its proper divisors (163626113582).

187001272648 is a wasteful number, since it uses less digits than its factorization.

187001272648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23375159087 (or 23375159083 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 46.

The spelling of 187001272648 in words is "one hundred eighty-seven billion, one million, two hundred seventy-two thousand, six hundred forty-eight".