18866054513742 has 16 divisors (see below), whose sum is σ = 38534919858432. Its totient is φ = 6154883032760.

The previous prime is 18866054513737. The next prime is 18866054513743. The reversal of 18866054513742 is 24731545066881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18866054513743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33450450984 + ... + 33450451547.

It is an arithmetic number, because the mean of its divisors is an integer number (2408432491152).

Almost surely, 2^{18866054513742} is an apocalyptic number.

18866054513742 is an abundant number, since it is smaller than the sum of its proper divisors (19668865344690).

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

18866054513742 is a wasteful number, since it uses less digits than its factorization.

18866054513742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66900902583.

The product of its (nonzero) digits is 38707200, while the sum is 60.

The spelling of 18866054513742 in words is "eighteen trillion, eight hundred sixty-six billion, fifty-four million, five hundred thirteen thousand, seven hundred forty-two".