1177628122561 has 8 divisors (see below), whose sum is σ = 1291862239200. Its totient is φ = 1064590175040.

The previous prime is 1177628122553. The next prime is 1177628122591. The reversal of 1177628122561 is 1652218267711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1177628122561 - 2³ = 1177628122553 is a prime.

It is a super-3 number, since 3×1177628122561³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1177628122511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299040216 + ... + 299044153.

It is an arithmetic number, because the mean of its divisors is an integer number (161482779900).

Almost surely, 2^{1177628122561} is an apocalyptic number.

1177628122561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1177628122561 is a deficient number, since it is larger than the sum of its proper divisors (114234116639).

1177628122561 is a wasteful number, since it uses less digits than its factorization.

1177628122561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598084559.

The product of its digits is 564480, while the sum is 49.

The spelling of 1177628122561 in words is "one trillion, one hundred seventy-seven billion, six hundred twenty-eight million, one hundred twenty-two thousand, five hundred sixty-one".