49921653469 has 4 divisors (see below), whose sum is σ = 49933136700. Its totient is φ = 49910170240.

The previous prime is 49921653461. The next prime is 49921653511. The reversal of 49921653469 is 96435612994.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18472887225 + 31448766244 = 135915^2 + 177338^2 .

It is a cyclic number.

It is not a de Polignac number, because 49921653469 - 2³ = 49921653461 is a prime.

It is a super-2 number, since 2×49921653469² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49921653461) 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, 5735092 + ... + 5743789.

It is an arithmetic number, because the mean of its divisors is an integer number (12483284175).

Almost surely, 2^49921653469 is an apocalyptic number.

It is an amenable number.

49921653469 is a deficient number, since it is larger than the sum of its proper divisors (11483231).

49921653469 is a wasteful number, since it uses less digits than its factorization.

49921653469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11483230.

The product of its digits is 12597120, while the sum is 58.

The spelling of 49921653469 in words is "forty-nine billion, nine hundred twenty-one million, six hundred fifty-three thousand, four hundred sixty-nine".