42535378777 has 4 divisors (see below), whose sum is σ = 42552375040. Its totient is φ = 42518382516.

The previous prime is 42535378763. The next prime is 42535378811. The reversal of 42535378777 is 77787353524.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42535378777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42535378477) 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, 8494377 + ... + 8499382.

It is an arithmetic number, because the mean of its divisors is an integer number (10638093760).

Almost surely, 2^42535378777 is an apocalyptic number.

It is an amenable number.

42535378777 is a deficient number, since it is larger than the sum of its proper divisors (16996263).

42535378777 is a wasteful number, since it uses less digits than its factorization.

42535378777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16996262.

The product of its digits is 34574400, while the sum is 58.

The spelling of 42535378777 in words is "forty-two billion, five hundred thirty-five million, three hundred seventy-eight thousand, seven hundred seventy-seven".