1597669781155 has 8 divisors (see below), whose sum is σ = 2191089985632. Its totient is φ = 1095544992768.

The previous prime is 1597669781153. The next prime is 1597669781177. The reversal of 1597669781155 is 5511879667951.

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 1597669781155 - 2¹ = 1597669781153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1597669781153) 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 7 ways as a sum of consecutive naturals, for example, 22823853982 + ... + 22823854051.

It is an arithmetic number, because the mean of its divisors is an integer number (273886248204).

Almost surely, 2^{1597669781155} is an apocalyptic number.

1597669781155 is a deficient number, since it is larger than the sum of its proper divisors (593420204477).

1597669781155 is an equidigital number, since it uses as much as digits as its factorization.

1597669781155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45647708045.

The product of its digits is 142884000, while the sum is 70.

The spelling of 1597669781155 in words is "one trillion, five hundred ninety-seven billion, six hundred sixty-nine million, seven hundred eighty-one thousand, one hundred fifty-five".