13758001851666 has 64 divisors (see below), whose sum is σ = 30237870960000. Its totient is φ = 4156332590592.

The previous prime is 13758001851613. The next prime is 13758001851701. The reversal of 13758001851666 is 66615810085731.

It is a super-2 number, since 2×13758001851666² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18729211 + ... + 19449918.

It is an arithmetic number, because the mean of its divisors is an integer number (472466733750).

Almost surely, 2^{13758001851666} is an apocalyptic number.

13758001851666 is an abundant number, since it is smaller than the sum of its proper divisors (16479869108334).

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

13758001851666 is a wasteful number, since it uses less digits than its factorization.

13758001851666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38179291.

The product of its (nonzero) digits is 7257600, while the sum is 57.

The spelling of 13758001851666 in words is "thirteen trillion, seven hundred fifty-eight billion, one million, eight hundred fifty-one thousand, six hundred sixty-six".