187872843453061 has 16 divisors (see below), whose sum is σ = 214231047174144. Its totient is φ = 163216036802304.

The previous prime is 187872843453037. The next prime is 187872843453089. The reversal of 187872843453061 is 160354348278781.

It is a de Polignac number, because none of the positive numbers 2^k-187872843453061 is a prime.

It is a super-2 number, since 2×187872843453061² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187872843453661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407641 + ... + 19388446.

It is an arithmetic number, because the mean of its divisors is an integer number (13389440448384).

Almost surely, 2^{187872843453061} is an apocalyptic number.

It is an amenable number.

187872843453061 is a deficient number, since it is larger than the sum of its proper divisors (26358203721083).

187872843453061 is a wasteful number, since it uses less digits than its factorization.

187872843453061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19839060.

The product of its (nonzero) digits is 216760320, while the sum is 67.

The spelling of 187872843453061 in words is "one hundred eighty-seven trillion, eight hundred seventy-two billion, eight hundred forty-three million, four hundred fifty-three thousand, sixty-one".