1177233271555 has 32 divisors (see below), whose sum is σ = 1609884523008. Its totient is φ = 818041171200.

The previous prime is 1177233271553. The next prime is 1177233271579. The reversal of 1177233271555 is 5551723327711.

It is not a de Polignac number, because 1177233271555 - 2¹ = 1177233271553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1177233271499 and 1177233271508.

It is not an unprimeable number, because it can be changed into a prime (1177233271553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 634335 + ... + 1660375.

It is an arithmetic number, because the mean of its divisors is an integer number (50308891344).

Almost surely, 2^{1177233271555} is an apocalyptic number.

1177233271555 is a deficient number, since it is larger than the sum of its proper divisors (432651251453).

1177233271555 is a wasteful number, since it uses less digits than its factorization.

1177233271555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026987.

The product of its digits is 1543500, while the sum is 49.

The spelling of 1177233271555 in words is "one trillion, one hundred seventy-seven billion, two hundred thirty-three million, two hundred seventy-one thousand, five hundred fifty-five".