1541216665431 has 6 divisors (see below), whose sum is σ = 2226201850080. Its totient is φ = 1027477776948.

The previous prime is 1541216665411. The next prime is 1541216665459. The reversal of 1541216665431 is 1345666121451.

It is not a de Polignac number, because 1541216665431 - 2⁹ = 1541216664919 is a prime.

It is a super-2 number, since 2×1541216665431² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1541216665411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 85623148071 + ... + 85623148088.

It is an arithmetic number, because the mean of its divisors is an integer number (371033641680).

Almost surely, 2^{1541216665431} is an apocalyptic number.

1541216665431 is a deficient number, since it is larger than the sum of its proper divisors (684985184649).

1541216665431 is a wasteful number, since it uses less digits than its factorization.

1541216665431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171246296165 (or 171246296162 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The spelling of 1541216665431 in words is "one trillion, five hundred forty-one billion, two hundred sixteen million, six hundred sixty-five thousand, four hundred thirty-one".