20118378106734 has 8 divisors (see below), whose sum is σ = 40236756213480. Its totient is φ = 6706126035576.

The previous prime is 20118378106721. The next prime is 20118378106741. The reversal of 20118378106734 is 43760187381102.

It is a sphenic number, since it is the product of 3 distinct primes.

20118378106734 is an admirable number.

It is a super-2 number, since 2×20118378106734² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1676531508889 + ... + 1676531508900.

It is an arithmetic number, because the mean of its divisors is an integer number (5029594526685).

Almost surely, 2^{20118378106734} is an apocalyptic number.

20118378106734 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20118378106734 is a wasteful number, since it uses less digits than its factorization.

20118378106734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3353063017794.

The product of its (nonzero) digits is 1354752, while the sum is 51.

The spelling of 20118378106734 in words is "twenty trillion, one hundred eighteen billion, three hundred seventy-eight million, one hundred six thousand, seven hundred thirty-four".