49365285489 has 81 divisors (see below), whose sum is σ = 80559793899. Its totient is φ = 30234662640.

The previous prime is 49365285469. The next prime is 49365285517. The reversal of 49365285489 is 98458256394.

The square root of 49365285489 is 222183.

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

49365285489 is a `hidden beast` number, since 4 + 9 + 3 + 65 + 28 + 548 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7302557025 + 42062728464 = 85455^2 + 205092^2 .

It is a tau number, because it is divible by the number of its divisors (81).

It is not a de Polignac number, because 49365285489 - 2¹⁵ = 49365252721 is a prime.

It is a super-2 number, since 2×49365285489² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (49365285469) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 233958594 + ... + 233958804.

Almost surely, 2^49365285489 is an apocalyptic number.

49365285489 is the 222183-rd square number.

49365285489 is the 111092-nd centered octagonal number.

It is an amenable number.

49365285489 is a deficient number, since it is larger than the sum of its proper divisors (31194508410).

49365285489 is an frugal number, since it uses more digits than its factorization.

49365285489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472 (or 227 counting only the distinct ones).

The product of its digits is 74649600, while the sum is 63.

The spelling of 49365285489 in words is "forty-nine billion, three hundred sixty-five million, two hundred eighty-five thousand, four hundred eighty-nine".