1047656649601 has 3 divisors (see below), whose sum is σ = 1047657673153. Its totient is φ = 1047655626050.

The previous prime is 1047656649593. The next prime is 1047656649619. The reversal of 1047656649601 is 1069466567401.

The square root of 1047656649601 is 1023551.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1047656649601 - 2³ = 1047656649593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1047656649101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 511776 + ... + 1535326.

Almost surely, 2^{1047656649601} is an apocalyptic number.

1047656649601 is the 1023551-st square number.

1047656649601 is the 511776-th centered octagonal number.

It is an amenable number.

1047656649601 is a deficient number, since it is larger than the sum of its proper divisors (1023552).

1047656649601 is an frugal number, since it uses more digits than its factorization.

1047656649601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2047102 (or 1023551 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 1047656649601 in words is "one trillion, forty-seven billion, six hundred fifty-six million, six hundred forty-nine thousand, six hundred one".