1577136480866 has 32 divisors (see below), whose sum is σ = 2494679281920. Its totient is φ = 746306390016.

The previous prime is 1577136480847. The next prime is 1577136480869. The reversal of 1577136480866 is 6680846317751.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1577136480799 and 1577136480808.

It is not an unprimeable number, because it can be changed into a prime (1577136480869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17307275 + ... + 17398161.

It is an arithmetic number, because the mean of its divisors is an integer number (77958727560).

Almost surely, 2^{1577136480866} is an apocalyptic number.

1577136480866 is a deficient number, since it is larger than the sum of its proper divisors (917542801054).

1577136480866 is a wasteful number, since it uses less digits than its factorization.

1577136480866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94898.

The product of its (nonzero) digits is 40642560, while the sum is 62.

The spelling of 1577136480866 in words is "one trillion, five hundred seventy-seven billion, one hundred thirty-six million, four hundred eighty thousand, eight hundred sixty-six".