11554142504661 has 24 divisors (see below), whose sum is σ = 16791758976824. Its totient is φ = 7655620832640.

The previous prime is 11554142504647. The next prime is 11554142504669. The reversal of 11554142504661 is 16640524145511.

It is a happy number.

11554142504661 is a `hidden beast` number, since 1 + 1 + 5 + 5 + 41 + 42 + 504 + 6 + 61 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 517169531025 + 11036972973636 = 719145^2 + 3322194^2 .

It is not a de Polignac number, because 11554142504661 - 2⁷ = 11554142504533 is a prime.

It is a super-3 number, since 3×11554142504661³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11554142504669) 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 23 ways as a sum of consecutive naturals, for example, 4847350 + ... + 6826791.

Almost surely, 2^{11554142504661} is an apocalyptic number.

It is an amenable number.

11554142504661 is a deficient number, since it is larger than the sum of its proper divisors (5237616472163).

11554142504661 is a wasteful number, since it uses less digits than its factorization.

11554142504661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11674821 (or 11674818 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The spelling of 11554142504661 in words is "eleven trillion, five hundred fifty-four billion, one hundred forty-two million, five hundred four thousand, six hundred sixty-one".