1687003368356 has 6 divisors (see below), whose sum is σ = 2952255894630. Its totient is φ = 843501684176.

The previous prime is 1687003368331. The next prime is 1687003368367. The reversal of 1687003368356 is 6538633007861.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1237789753600 + 449213614756 = 1112560^2 + 670234^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210875421041 + ... + 210875421048.

It is an arithmetic number, because the mean of its divisors is an integer number (492042649105).

Almost surely, 2^{1687003368356} is an apocalyptic number.

It is an amenable number.

1687003368356 is a deficient number, since it is larger than the sum of its proper divisors (1265252526274).

1687003368356 is a wasteful number, since it uses less digits than its factorization.

1687003368356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421750842093 (or 421750842091 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 56.

The spelling of 1687003368356 in words is "one trillion, six hundred eighty-seven billion, three million, three hundred sixty-eight thousand, three hundred fifty-six".