1152155076661 has 4 divisors (see below), whose sum is σ = 1168382613024. Its totient is φ = 1135927540300.

The previous prime is 1152155076659. The next prime is 1152155076679. The reversal of 1152155076661 is 1666705512511.

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 1152155076661 - 2¹ = 1152155076659 is a prime.

It is a super-2 number, since 2×1152155076661² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1152155076691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8113768075 + ... + 8113768216.

It is an arithmetic number, because the mean of its divisors is an integer number (292095653256).

Almost surely, 2^{1152155076661} is an apocalyptic number.

It is an amenable number.

1152155076661 is a deficient number, since it is larger than the sum of its proper divisors (16227536363).

1152155076661 is an equidigital number, since it uses as much as digits as its factorization.

1152155076661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16227536362.

The product of its (nonzero) digits is 378000, while the sum is 46.

The spelling of 1152155076661 in words is "one trillion, one hundred fifty-two billion, one hundred fifty-five million, seventy-six thousand, six hundred sixty-one".