2151131662373 has 2 divisors, whose sum is σ = 2151131662374. Its totient is φ = 2151131662372.

The previous prime is 2151131662343. The next prime is 2151131662429. The reversal of 2151131662373 is 3732661311512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1686795720289 + 464335942084 = 1298767^2 + 681422^2 .

It is a cyclic number.

It is not a de Polignac number, because 2151131662373 - 2¹⁶ = 2151131596837 is a prime.

It is a super-2 number, since 2×2151131662373² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2151131662373.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2151131662313) 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 as a sum of consecutive naturals, namely, 1075565831186 + 1075565831187.

It is an arithmetic number, because the mean of its divisors is an integer number (1075565831187).

Almost surely, 2^{2151131662373} is an apocalyptic number.

It is an amenable number.

2151131662373 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151131662373 is an equidigital number, since it uses as much as digits as its factorization.

2151131662373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 41.

Adding to 2151131662373 its reverse (3732661311512), we get a palindrome (5883792973885).

The spelling of 2151131662373 in words is "two trillion, one hundred fifty-one billion, one hundred thirty-one million, six hundred sixty-two thousand, three hundred seventy-three".