2155137741591 has 16 divisors (see below), whose sum is σ = 3046515561600. Its totient is φ = 1351347249888.

The previous prime is 2155137741587. The next prime is 2155137741611. The reversal of 2155137741591 is 1951477315512.

It is not a de Polignac number, because 2155137741591 - 2² = 2155137741587 is a prime.

It is a super-2 number, since 2×2155137741591² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155137749591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135997236 + ... + 136013081.

It is an arithmetic number, because the mean of its divisors is an integer number (190407222600).

Almost surely, 2^{2155137741591} is an apocalyptic number.

2155137741591 is a deficient number, since it is larger than the sum of its proper divisors (891377820009).

2155137741591 is a wasteful number, since it uses less digits than its factorization.

2155137741591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272010478.

The product of its digits is 1323000, while the sum is 51.

The spelling of 2155137741591 in words is "two trillion, one hundred fifty-five billion, one hundred thirty-seven million, seven hundred forty-one thousand, five hundred ninety-one".