83770505469 has 12 divisors (see below), whose sum is σ = 138287818656. Its totient is φ = 47868860232.

The previous prime is 83770505459. The next prime is 83770505471. The reversal of 83770505469 is 96450507738.

83770505469 is a `hidden beast` number, since 8 + 3 + 7 + 70 + 505 + 4 + 69 = 666.

It is not a de Polignac number, because 83770505469 - 2⁵ = 83770505437 is a prime.

It is a super-2 number, since 2×83770505469² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83770505459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 664845219 + ... + 664845344.

It is an arithmetic number, because the mean of its divisors is an integer number (11523984888).

Almost surely, 2^83770505469 is an apocalyptic number.

It is an amenable number.

83770505469 is a deficient number, since it is larger than the sum of its proper divisors (54517313187).

83770505469 is a wasteful number, since it uses less digits than its factorization.

83770505469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329690576 (or 1329690573 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 54.

The spelling of 83770505469 in words is "eighty-three billion, seven hundred seventy million, five hundred five thousand, four hundred sixty-nine".