18340687962780 has 96 divisors (see below), whose sum is σ = 52112387384064. Its totient is φ = 4818757261824.

The previous prime is 18340687962739. The next prime is 18340687962809. The reversal of 18340687962780 is 8726978604381.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1936999 + ... + 6358721.

It is an arithmetic number, because the mean of its divisors is an integer number (542837368584).

Almost surely, 2^{18340687962780} is an apocalyptic number.

18340687962780 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 18340687962780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26056193692032).

18340687962780 is an abundant number, since it is smaller than the sum of its proper divisors (33771699421284).

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

18340687962780 is a wasteful number, since it uses less digits than its factorization.

18340687962780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4422755 (or 4422753 counting only the distinct ones).

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

The spelling of 18340687962780 in words is "eighteen trillion, three hundred forty billion, six hundred eighty-seven million, nine hundred sixty-two thousand, seven hundred eighty".