188856502745 has 4 divisors (see below), whose sum is σ = 226627803300. Its totient is φ = 151085202192.

The previous prime is 188856502687. The next prime is 188856502759. The reversal of 188856502745 is 547205658881.

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

It can be written as a sum of positive squares in 2 ways, for example, as 62986944784 + 125869557961 = 250972^2 + 354781^2 .

It is a cyclic number.

It is not a de Polignac number, because 188856502745 - 2³² = 184561535449 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18885650270 + ... + 18885650279.

It is an arithmetic number, because the mean of its divisors is an integer number (56656950825).

Almost surely, 2^188856502745 is an apocalyptic number.

It is an amenable number.

188856502745 is a deficient number, since it is larger than the sum of its proper divisors (37771300555).

188856502745 is an equidigital number, since it uses as much as digits as its factorization.

188856502745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37771300554.

The product of its (nonzero) digits is 21504000, while the sum is 59.

The spelling of 188856502745 in words is "one hundred eighty-eight billion, eight hundred fifty-six million, five hundred two thousand, seven hundred forty-five".