42775457393 has 4 divisors (see below), whose sum is σ = 42775871040. Its totient is φ = 42775043748.

The previous prime is 42775457381. The next prime is 42775457419. The reversal of 42775457393 is 39375457724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42775457393 - 2¹⁰ = 42775456369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42775457363) 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, 102596 + ... + 309962.

It is an arithmetic number, because the mean of its divisors is an integer number (10693967760).

Almost surely, 2^42775457393 is an apocalyptic number.

It is an amenable number.

42775457393 is a deficient number, since it is larger than the sum of its proper divisors (413647).

42775457393 is a wasteful number, since it uses less digits than its factorization.

42775457393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413646.

The product of its digits is 22226400, while the sum is 56.

The spelling of 42775457393 in words is "forty-two billion, seven hundred seventy-five million, four hundred fifty-seven thousand, three hundred ninety-three".