188370800640 has 1456 divisors, whose sum is σ = 783832306176. Its totient is φ = 42998169600.

The previous prime is 188370800617. The next prime is 188370800641. The reversal of 188370800640 is 46008073881.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188370800641) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 5091102702 + ... + 5091102738.

Almost surely, 2^188370800640 is an apocalyptic number.

188370800640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 188370800640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391916153088).

188370800640 is an abundant number, since it is smaller than the sum of its proper divisors (595461505536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

188370800640 is an equidigital number, since it uses as much as digits as its factorization.

188370800640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 188370800640 in words is "one hundred eighty-eight billion, three hundred seventy million, eight hundred thousand, six hundred forty".