42905553769 has 4 divisors (see below), whose sum is σ = 46205980996. Its totient is φ = 39605126544.

The previous prime is 42905553767. The next prime is 42905553791. The reversal of 42905553769 is 96735550924.

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 9027470169 + 33878083600 = 95013^2 + 184060^2 .

It is a cyclic number.

It is not a de Polignac number, because 42905553769 - 2¹ = 42905553767 is a prime.

It is a super-2 number, since 2×42905553769² (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 (42905553767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1650213594 + ... + 1650213619.

It is an arithmetic number, because the mean of its divisors is an integer number (11551495249).

Almost surely, 2^42905553769 is an apocalyptic number.

It is an amenable number.

42905553769 is a deficient number, since it is larger than the sum of its proper divisors (3300427227).

42905553769 is a wasteful number, since it uses less digits than its factorization.

42905553769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3300427226.

The product of its (nonzero) digits is 10206000, while the sum is 55.

The spelling of 42905553769 in words is "forty-two billion, nine hundred five million, five hundred fifty-three thousand, seven hundred sixty-nine".