166787545392 has 320 divisors, whose sum is σ = 530636037120. Its totient is φ = 49831372800.

The previous prime is 166787545381. The next prime is 166787545399. The reversal of 166787545392 is 293545787661.

166787545392 is a `hidden beast` number, since 1 + 6 + 6 + 7 + 87 + 545 + 3 + 9 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (166787545399) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 52266517 + ... + 52269707.

It is an arithmetic number, because the mean of its divisors is an integer number (1658237616).

Almost surely, 2^166787545392 is an apocalyptic number.

166787545392 is a gapful number since it is divisible by the number (12) 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 166787545392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265318018560).

166787545392 is an abundant number, since it is smaller than the sum of its proper divisors (363848491728).

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

166787545392 is a wasteful number, since it uses less digits than its factorization.

166787545392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3489 (or 3477 counting only the distinct ones).

The product of its digits is 76204800, while the sum is 63.

The spelling of 166787545392 in words is "one hundred sixty-six billion, seven hundred eighty-seven million, five hundred forty-five thousand, three hundred ninety-two".