42577756361 has 4 divisors (see below), whose sum is σ = 48660292992. Its totient is φ = 36495219732.

The previous prime is 42577756337. The next prime is 42577756369. The reversal of 42577756361 is 16365777524.

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-42577756361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42577756369) 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, 3041268305 + ... + 3041268318.

It is an arithmetic number, because the mean of its divisors is an integer number (12165073248).

Almost surely, 2^42577756361 is an apocalyptic number.

It is an amenable number.

42577756361 is a deficient number, since it is larger than the sum of its proper divisors (6082536631).

42577756361 is an equidigital number, since it uses as much as digits as its factorization.

42577756361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6082536630.

The product of its digits is 7408800, while the sum is 53.

The spelling of 42577756361 in words is "forty-two billion, five hundred seventy-seven million, seven hundred fifty-six thousand, three hundred sixty-one".