42905565454755 has 64 divisors (see below), whose sum is σ = 70373803788288. Its totient is φ = 22309983252480.

The previous prime is 42905565454751. The next prime is 42905565454781. The reversal of 42905565454755 is 55745456550924.

It is a happy number.

It is a Cunningham number, because it is equal to 6550234²-1.

It is not a de Polignac number, because 42905565454755 - 2² = 42905565454751 is a prime.

It is a super-2 number, since 2×42905565454755² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42905565454751) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 844954927 + ... + 845005703.

It is an arithmetic number, because the mean of its divisors is an integer number (1099590684192).

Almost surely, 2^{42905565454755} is an apocalyptic number.

42905565454755 is a deficient number, since it is larger than the sum of its proper divisors (27468238333533).

42905565454755 is a wasteful number, since it uses less digits than its factorization.

42905565454755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53196.

The product of its (nonzero) digits is 756000000, while the sum is 66.

The spelling of 42905565454755 in words is "forty-two trillion, nine hundred five billion, five hundred sixty-five million, four hundred fifty-four thousand, seven hundred fifty-five".