8542641497 has 16 divisors (see below), whose sum is σ = 9319689792. Its totient is φ = 7783266240.

The previous prime is 8542641487. The next prime is 8542641587. The reversal of 8542641497 is 7941462458.

It is a cyclic number.

It is not a de Polignac number, because 8542641497 - 2¹⁸ = 8542379353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8542641487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 374222 + ... + 396392.

It is an arithmetic number, because the mean of its divisors is an integer number (582480612).

Almost surely, 2^8542641497 is an apocalyptic number.

It is an amenable number.

8542641497 is a deficient number, since it is larger than the sum of its proper divisors (777048295).

8542641497 is a wasteful number, since it uses less digits than its factorization.

8542641497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22568.

The product of its digits is 1935360, while the sum is 50.

The square root of 8542641497 is about 92426.4112524120. The cubic root of 8542641497 is about 2044.2345636381.

The spelling of 8542641497 in words is "eight billion, five hundred forty-two million, six hundred forty-one thousand, four hundred ninety-seven".