1156077223661 has 4 divisors (see below), whose sum is σ = 1156081713024. Its totient is φ = 1156072734300.

The previous prime is 1156077223643. The next prime is 1156077223699. The reversal of 1156077223661 is 1663227706511.

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 1156077223661 - 2³⁴ = 1138897354477 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 (1156077223261) 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, 1833275 + ... + 2381816.

It is an arithmetic number, because the mean of its divisors is an integer number (289020428256).

Almost surely, 2^{1156077223661} is an apocalyptic number.

It is an amenable number.

1156077223661 is a deficient number, since it is larger than the sum of its proper divisors (4489363).

1156077223661 is an equidigital number, since it uses as much as digits as its factorization.

1156077223661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4489362.

The product of its (nonzero) digits is 635040, while the sum is 47.

The spelling of 1156077223661 in words is "one trillion, one hundred fifty-six billion, seventy-seven million, two hundred twenty-three thousand, six hundred sixty-one".