1153820042477 has 4 divisors (see below), whose sum is σ = 1159798384860. Its totient is φ = 1147841700096.

The previous prime is 1153820042467. The next prime is 1153820042491. The reversal of 1153820042477 is 7742400283511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 709669771561 + 444150270916 = 842419^2 + 666446^2 .

It is a cyclic number.

It is not a de Polignac number, because 1153820042477 - 2¹² = 1153820038381 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 (1153820042437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2989170902 + ... + 2989171287.

It is an arithmetic number, because the mean of its divisors is an integer number (289949596215).

Almost surely, 2^{1153820042477} is an apocalyptic number.

It is an amenable number.

1153820042477 is a deficient number, since it is larger than the sum of its proper divisors (5978342383).

1153820042477 is an equidigital number, since it uses as much as digits as its factorization.

1153820042477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5978342382.

The product of its (nonzero) digits is 376320, while the sum is 44.

The spelling of 1153820042477 in words is "one trillion, one hundred fifty-three billion, eight hundred twenty million, forty-two thousand, four hundred seventy-seven".