52578152499 has 4 divisors (see below), whose sum is σ = 70104203336. Its totient is φ = 35052101664.

The previous prime is 52578152491. The next prime is 52578152567. The reversal of 52578152499 is 99425187525.

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

It is not a de Polignac number, because 52578152499 - 2³ = 52578152491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52578152491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8763025414 + ... + 8763025419.

It is an arithmetic number, because the mean of its divisors is an integer number (17526050834).

Almost surely, 2^52578152499 is an apocalyptic number.

52578152499 is a deficient number, since it is larger than the sum of its proper divisors (17526050837).

52578152499 is a wasteful number, since it uses less digits than its factorization.

52578152499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17526050836.

The product of its digits is 9072000, while the sum is 57.

The spelling of 52578152499 in words is "fifty-two billion, five hundred seventy-eight million, one hundred fifty-two thousand, four hundred ninety-nine".