298240658000640 has 288 divisors, whose sum is σ = 1058561143281600. Its totient is φ = 79514232422400.

The previous prime is 298240658000609. The next prime is 298240658000641. The reversal of 298240658000640 is 46000856042892.

298240658000640 is a `hidden beast` number, since 29 + 82 + 406 + 5 + 80 + 0 + 0 + 64 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (298240658000641) 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, 165023826 + ... + 166821294.

Almost surely, 2^{298240658000640} is an apocalyptic number.

298240658000640 is a gapful number since it is divisible by the number (20) 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 298240658000640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (529280571640800).

298240658000640 is an abundant number, since it is smaller than the sum of its proper divisors (760320485280960).

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

298240658000640 is a wasteful number, since it uses less digits than its factorization.

298240658000640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802300 (or 1802280 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The spelling of 298240658000640 in words is "two hundred ninety-eight trillion, two hundred forty billion, six hundred fifty-eight million, six hundred forty", and thus it is an aban number.