361718187840 has 1680 divisors, whose sum is σ = 1483847354880. Its totient is φ = 83398533120.

The previous prime is 361718187833. The next prime is 361718187947. The reversal of 361718187840 is 48781817163.

361718187840 is a `hidden beast` number, since 3 + 617 + 1 + 8 + 18 + 7 + 8 + 4 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 8412050859 + ... + 8412050901.

Almost surely, 2^361718187840 is an apocalyptic number.

361718187840 is a gapful number since it is divisible by the number (30) 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 361718187840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (741923677440).

361718187840 is an abundant number, since it is smaller than the sum of its proper divisors (1122129167040).

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

361718187840 is a wasteful number, since it uses less digits than its factorization.

361718187840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 54.

The spelling of 361718187840 in words is "three hundred sixty-one billion, seven hundred eighteen million, one hundred eighty-seven thousand, eight hundred forty".