49656328569 has 9 divisors (see below), whose sum is σ = 71726773573. Its totient is φ = 33103773372.

The previous prime is 49656328549. The next prime is 49656328571. The reversal of 49656328569 is 96582365694.

The square root of 49656328569 is 222837.

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

49656328569 is a `hidden beast` number, since 4 + 9 + 6 + 5 + 63 + 2 + 8 + 569 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 49656328569 - 2¹⁷ = 49656197497 is a prime.

It is a super-2 number, since 2×49656328569² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49656328549) 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, 631372 + ... + 705650.

Almost surely, 2^49656328569 is an apocalyptic number.

49656328569 is the 222837-th square number.

49656328569 is the 111419-th centered octagonal number.

It is an amenable number.

49656328569 is a deficient number, since it is larger than the sum of its proper divisors (22070445004).

49656328569 is an frugal number, since it uses more digits than its factorization.

49656328569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148564 (or 74282 counting only the distinct ones).

The product of its digits is 83980800, while the sum is 63.

It can be divided in two parts, 49656 and 328569, that added together give a square (378225 = 615²).

The spelling of 49656328569 in words is "forty-nine billion, six hundred fifty-six million, three hundred twenty-eight thousand, five hundred sixty-nine".