3554540748081 has 6 divisors (see below), whose sum is σ = 5134336636130. Its totient is φ = 2369693832048.

The previous prime is 3554540748049. The next prime is 3554540748119. The reversal of 3554540748081 is 1808470454553.

It is a happy number.

3554540748081 is a `hidden beast` number, since 3 + 5 + 5 + 45 + 40 + 7 + 480 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2796282939681 + 758257808400 = 1672209^2 + 870780^2 .

It is not a de Polignac number, because 3554540748081 - 2⁵ = 3554540748049 is a prime.

It is a super-2 number, since 2×3554540748081² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3554540748001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 197474485996 + ... + 197474486013.

Almost surely, 2^{3554540748081} is an apocalyptic number.

It is an amenable number.

3554540748081 is a deficient number, since it is larger than the sum of its proper divisors (1579795888049).

3554540748081 is a wasteful number, since it uses less digits than its factorization.

3554540748081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394948972015 (or 394948972012 counting only the distinct ones).

The product of its (nonzero) digits is 10752000, while the sum is 54.

The spelling of 3554540748081 in words is "three trillion, five hundred fifty-four billion, five hundred forty million, seven hundred forty-eight thousand, eighty-one".