49801724569 has 9 divisors (see below), whose sum is σ = 51055407039. Its totient is φ = 48578121840.

The previous prime is 49801724561. The next prime is 49801724573. The reversal of 49801724569 is 96542710894.

The square root of 49801724569 is 223163.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2399726169 + 47401998400 = 48987^2 + 217720^2 .

It is not a de Polignac number, because 49801724569 - 2³ = 49801724561 is a prime.

It is a super-3 number, since 3×49801724569³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49801724561) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9146962 + ... + 9152404.

Almost surely, 2^49801724569 is an apocalyptic number.

49801724569 is the 223163-rd square number.

49801724569 is the 111582-nd centered octagonal number.

It is an amenable number.

49801724569 is a deficient number, since it is larger than the sum of its proper divisors (1253682470).

49801724569 is an frugal number, since it uses more digits than its factorization.

49801724569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10968 (or 5484 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 49801724569 in words is "forty-nine billion, eight hundred one million, seven hundred twenty-four thousand, five hundred sixty-nine".