1011654665541 has 144 divisors (see below), whose sum is σ = 1719046929600. Its totient is φ = 567904877568.

The previous prime is 1011654665521. The next prime is 1011654665551. The reversal of 1011654665541 is 1455664561101.

It is a happy number.

1011654665541 is a `hidden beast` number, since 1 + 0 + 1 + 1 + 6 + 5 + 46 + 65 + 541 = 666.

It is not a de Polignac number, because 1011654665541 - 2⁹ = 1011654665029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011654665521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 511193890 + ... + 511195868.

It is an arithmetic number, because the mean of its divisors is an integer number (11937825900).

Almost surely, 2^{1011654665541} is an apocalyptic number.

It is an amenable number.

1011654665541 is a deficient number, since it is larger than the sum of its proper divisors (707392264059).

1011654665541 is a wasteful number, since it uses less digits than its factorization.

1011654665541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2240 (or 2194 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 1011654665541 in words is "one trillion, eleven billion, six hundred fifty-four million, six hundred sixty-five thousand, five hundred forty-one".