6535742407 has 4 divisors (see below), whose sum is σ = 6579606600. Its totient is φ = 6491878216.

The previous prime is 6535742401. The next prime is 6535742471. The reversal of 6535742407 is 7042475356.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6535742407 - 2²³ = 6527353799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6535742401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21931873 + ... + 21932170.

It is an arithmetic number, because the mean of its divisors is an integer number (1644901650).

Almost surely, 2^6535742407 is an apocalyptic number.

6535742407 is a deficient number, since it is larger than the sum of its proper divisors (43864193).

6535742407 is a wasteful number, since it uses less digits than its factorization.

6535742407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43864192.

The product of its (nonzero) digits is 705600, while the sum is 43.

The square root of 6535742407 is about 80843.9385915852. The cubic root of 6535742407 is about 1869.6700693341.

The spelling of 6535742407 in words is "six billion, five hundred thirty-five million, seven hundred forty-two thousand, four hundred seven".