1648680077188 has 12 divisors (see below), whose sum is σ = 2891853394780. Its totient is φ = 822436250112.

The previous prime is 1648680077171. The next prime is 1648680077237. The reversal of 1648680077188 is 8817700868461.

It can be written as a sum of positive squares in 2 ways, for example, as 926999244864 + 721680832324 = 962808^2 + 849518^2 .

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475945173 + ... + 475948636.

Almost surely, 2^{1648680077188} is an apocalyptic number.

It is an amenable number.

1648680077188 is a deficient number, since it is larger than the sum of its proper divisors (1243173317592).

1648680077188 is a wasteful number, since it uses less digits than its factorization.

1648680077188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951894246 (or 951894244 counting only the distinct ones).

The product of its (nonzero) digits is 28901376, while the sum is 64.

The spelling of 1648680077188 in words is "one trillion, six hundred forty-eight billion, six hundred eighty million, seventy-seven thousand, one hundred eighty-eight".