9957542539 has 8 divisors (see below), whose sum is σ = 11421134048. Its totient is φ = 8504222400.

The previous prime is 9957542537. The next prime is 9957542579. The reversal of 9957542539 is 9352457599.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9957542539 - 2¹ = 9957542537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9957542537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2565762 + ... + 2569639.

It is an arithmetic number, because the mean of its divisors is an integer number (1427641756).

Almost surely, 2^9957542539 is an apocalyptic number.

9957542539 is a deficient number, since it is larger than the sum of its proper divisors (1463591509).

9957542539 is a wasteful number, since it uses less digits than its factorization.

9957542539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5135685.

The product of its digits is 15309000, while the sum is 58.

The square root of 9957542539 is about 99787.4868858816. The cubic root of 9957542539 is about 2151.3813037508.

The spelling of 9957542539 in words is "nine billion, nine hundred fifty-seven million, five hundred forty-two thousand, five hundred thirty-nine".