2155151153444 has 24 divisors (see below), whose sum is σ = 3972774355200. Its totient is φ = 1020151596960.

The previous prime is 2155151153431. The next prime is 2155151153447. The reversal of 2155151153444 is 4443511515512.

It is a super-2 number, since 2×2155151153444² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2155151153447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9743747 + ... + 9962474.

It is an arithmetic number, because the mean of its divisors is an integer number (165532264800).

Almost surely, 2^{2155151153444} is an apocalyptic number.

It is an amenable number.

2155151153444 is a deficient number, since it is larger than the sum of its proper divisors (1817623201756).

2155151153444 is a wasteful number, since it uses less digits than its factorization.

2155151153444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19707683 (or 19707681 counting only the distinct ones).

The product of its digits is 240000, while the sum is 41.

Adding to 2155151153444 its reverse (4443511515512), we get a palindrome (6598662668956).

The spelling of 2155151153444 in words is "two trillion, one hundred fifty-five billion, one hundred fifty-one million, one hundred fifty-three thousand, four hundred forty-four".