1162655611621 has 4 divisors (see below), whose sum is σ = 1328749270432. Its totient is φ = 996561952812.

The previous prime is 1162655611573. The next prime is 1162655611657. The reversal of 1162655611621 is 1261165562611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1162655611621 - 2¹¹ = 1162655609573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1162655611121) 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 3 ways as a sum of consecutive naturals, for example, 83046829395 + ... + 83046829408.

It is an arithmetic number, because the mean of its divisors is an integer number (332187317608).

Almost surely, 2^{1162655611621} is an apocalyptic number.

It is an amenable number.

1162655611621 is a deficient number, since it is larger than the sum of its proper divisors (166093658811).

1162655611621 is an equidigital number, since it uses as much as digits as its factorization.

1162655611621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166093658810.

The product of its digits is 129600, while the sum is 43.

The spelling of 1162655611621 in words is "one trillion, one hundred sixty-two billion, six hundred fifty-five million, six hundred eleven thousand, six hundred twenty-one".