2187370737381 has 16 divisors (see below), whose sum is σ = 2995003484928. Its totient is φ = 1419335409600.

The previous prime is 2187370737371. The next prime is 2187370737389. The reversal of 2187370737381 is 1837370737812.

It is a de Polignac number, because none of the positive numbers 2^k-2187370737381 is a prime.

It is a super-2 number, since 2×2187370737381² (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 (2187370737389) 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, 42828810 + ... + 42879851.

It is an arithmetic number, because the mean of its divisors is an integer number (187187717808).

Almost surely, 2^{2187370737381} is an apocalyptic number.

It is an amenable number.

2187370737381 is a deficient number, since it is larger than the sum of its proper divisors (807632747547).

2187370737381 is a wasteful number, since it uses less digits than its factorization.

2187370737381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85708892.

The product of its (nonzero) digits is 8297856, while the sum is 57.

The spelling of 2187370737381 in words is "two trillion, one hundred eighty-seven billion, three hundred seventy million, seven hundred thirty-seven thousand, three hundred eighty-one".