187428632043 has 4 divisors (see below), whose sum is σ = 249904842728. Its totient is φ = 124952421360.

The previous prime is 187428631963. The next prime is 187428632063. The reversal of 187428632043 is 340236824781.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 187428632043 - 2¹⁸ = 187428369899 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 187428631983 and 187428632001.

It is not an unprimeable number, because it can be changed into a prime (187428632063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31238105338 + ... + 31238105343.

It is an arithmetic number, because the mean of its divisors is an integer number (62476210682).

Almost surely, 2^187428632043 is an apocalyptic number.

187428632043 is a deficient number, since it is larger than the sum of its proper divisors (62476210685).

187428632043 is an equidigital number, since it uses as much as digits as its factorization.

187428632043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62476210684.

The product of its (nonzero) digits is 1548288, while the sum is 48.

The spelling of 187428632043 in words is "one hundred eighty-seven billion, four hundred twenty-eight million, six hundred thirty-two thousand, forty-three".