188428032139776 has 320 divisors, whose sum is σ = 615384542868480. Its totient is φ = 50415525642240.

The previous prime is 188428032139771. The next prime is 188428032139829. The reversal of 188428032139776 is 677931230824881.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a self number, because there is not a number n which added to its sum of digits gives 188428032139776.

It is not an unprimeable number, because it can be changed into a prime (188428032139771) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13597306 + ... + 23701113.

It is an arithmetic number, because the mean of its divisors is an integer number (1923076696464).

Almost surely, 2^{188428032139776} is an apocalyptic number.

188428032139776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

188428032139776 is an abundant number, since it is smaller than the sum of its proper divisors (426956510728704).

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

188428032139776 is a wasteful number, since it uses less digits than its factorization.

188428032139776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37298487 (or 37298471 counting only the distinct ones).

The product of its (nonzero) digits is 195084288, while the sum is 69.

The spelling of 188428032139776 in words is "one hundred eighty-eight trillion, four hundred twenty-eight billion, thirty-two million, one hundred thirty-nine thousand, seven hundred seventy-six".