49178489509 has 8 divisors (see below), whose sum is σ = 49257624320. Its totient is φ = 49099388976.

The previous prime is 49178489483. The next prime is 49178489519. The reversal of 49178489509 is 90598487194.

It is a happy number.

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 49178489509 - 2²⁷ = 49044271781 is a prime.

It is a super-2 number, since 2×49178489509² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49178489519) 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 7 ways as a sum of consecutive naturals, for example, 5683024 + ... + 5691670.

It is an arithmetic number, because the mean of its divisors is an integer number (6157203040).

Almost surely, 2^49178489509 is an apocalyptic number.

It is an amenable number.

49178489509 is a deficient number, since it is larger than the sum of its proper divisors (79134811).

49178489509 is an equidigital number, since it uses as much as digits as its factorization.

49178489509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17139.

The product of its (nonzero) digits is 26127360, while the sum is 64.

The spelling of 49178489509 in words is "forty-nine billion, one hundred seventy-eight million, four hundred eighty-nine thousand, five hundred nine".