11554143511631 has 32 divisors (see below), whose sum is σ = 13882158151680. Its totient is φ = 9409084540416.

The previous prime is 11554143511627. The next prime is 11554143511661. The reversal of 11554143511631 is 13611534145511.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11554143511631 - 2² = 11554143511627 is a prime.

It is a super-2 number, since 2×11554143511631² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11554143511661) 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 31 ways as a sum of consecutive naturals, for example, 4174880 + ... + 6366938.

It is an arithmetic number, because the mean of its divisors is an integer number (433817442240).

Almost surely, 2^{11554143511631} is an apocalyptic number.

11554143511631 is a deficient number, since it is larger than the sum of its proper divisors (2328014640049).

11554143511631 is a wasteful number, since it uses less digits than its factorization.

11554143511631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2192583.

The product of its digits is 108000, while the sum is 41.

The spelling of 11554143511631 in words is "eleven trillion, five hundred fifty-four billion, one hundred forty-three million, five hundred eleven thousand, six hundred thirty-one".