1555051515131 has 16 divisors (see below), whose sum is σ = 1660647260160. Its totient is φ = 1452925356960.

The previous prime is 1555051515091. The next prime is 1555051515139. The reversal of 1555051515131 is 1315151505551.

It is a cyclic number.

It is not a de Polignac number, because 1555051515131 - 2²⁶ = 1554984406267 is a prime.

It is a super-4 number, since 4×1555051515131⁴ (a number of 50 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1555051515139) 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 15 ways as a sum of consecutive naturals, for example, 32684546 + ... + 32732088.

It is an arithmetic number, because the mean of its divisors is an integer number (103790453760).

Almost surely, 2^{1555051515131} is an apocalyptic number.

1555051515131 is a deficient number, since it is larger than the sum of its proper divisors (105595745029).

1555051515131 is a wasteful number, since it uses less digits than its factorization.

1555051515131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83986.

The product of its (nonzero) digits is 46875, while the sum is 38.

The spelling of 1555051515131 in words is "one trillion, five hundred fifty-five billion, fifty-one million, five hundred fifteen thousand, one hundred thirty-one".