2155532101387 has 8 divisors (see below), whose sum is σ = 2472832048896. Its totient is φ = 1840573851432.

The previous prime is 2155532101319. The next prime is 2155532101397. The reversal of 2155532101387 is 7831012355512.

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 2155532101387 - 2³⁵ = 2121172363019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2155532101397) 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, 585422413 + ... + 585426094.

It is an arithmetic number, because the mean of its divisors is an integer number (309104006112).

Almost surely, 2^{2155532101387} is an apocalyptic number.

2155532101387 is a deficient number, since it is larger than the sum of its proper divisors (317299947509).

2155532101387 is a wasteful number, since it uses less digits than its factorization.

2155532101387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170848777.

The product of its (nonzero) digits is 252000, while the sum is 43.

Adding to 2155532101387 its reverse (7831012355512), we get a palindrome (9986544456899).

The spelling of 2155532101387 in words is "two trillion, one hundred fifty-five billion, five hundred thirty-two million, one hundred one thousand, three hundred eighty-seven".