13554850821881 has 8 divisors (see below), whose sum is σ = 14494295930184. Its totient is φ = 12631194707200.

The previous prime is 13554850821823. The next prime is 13554850821937. The reversal of 13554850821881 is 18812805845531.

It can be written as a sum of positive squares in 4 ways, for example, as 6271243020025 + 7283607801856 = 2504245^2 + 2698816^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13554850821881 - 2³⁴ = 13537670952697 is a prime.

It is a super-2 number, since 2×13554850821881² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13554850821881.

It is not an unprimeable number, because it can be changed into a prime (13554850821181) 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, 3947246630 + ... + 3947250063.

It is an arithmetic number, because the mean of its divisors is an integer number (1811786991273).

Almost surely, 2^{13554850821881} is an apocalyptic number.

It is an amenable number.

13554850821881 is a deficient number, since it is larger than the sum of its proper divisors (939445108303).

13554850821881 is a wasteful number, since it uses less digits than its factorization.

13554850821881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7894496811.

The product of its (nonzero) digits is 12288000, while the sum is 59.

The spelling of 13554850821881 in words is "thirteen trillion, five hundred fifty-four billion, eight hundred fifty million, eight hundred twenty-one thousand, eight hundred eighty-one".