1146721635968 has 16 divisors (see below), whose sum is σ = 2284484509410. Its totient is φ = 573360817920.

The previous prime is 1146721635967. The next prime is 1146721636069. The reversal of 1146721635968 is 8695361276411.

It can be written as a sum of positive squares in only one way, i.e., 913308971584 + 233412664384 = 955672^2 + 483128^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×1146721635968² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1146721635967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4479381263 + ... + 4479381518.

Almost surely, 2^{1146721635968} is an apocalyptic number.

It is an amenable number.

1146721635968 is a deficient number, since it is larger than the sum of its proper divisors (1137762873442).

1146721635968 is an frugal number, since it uses more digits than its factorization.

1146721635968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8958762795 (or 8958762783 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 59.

The spelling of 1146721635968 in words is "one trillion, one hundred forty-six billion, seven hundred twenty-one million, six hundred thirty-five thousand, nine hundred sixty-eight".