42657723361 has 4 divisors (see below), whose sum is σ = 46535698224. Its totient is φ = 38779748500.

The previous prime is 42657723349. The next prime is 42657723419. The reversal of 42657723361 is 16332775624.

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 not a de Polignac number, because 42657723361 - 2⁷ = 42657723233 is a prime.

It is a super-3 number, since 3×42657723361³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42657723301) 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, 1938987415 + ... + 1938987436.

It is an arithmetic number, because the mean of its divisors is an integer number (11633924556).

Almost surely, 2^42657723361 is an apocalyptic number.

It is an amenable number.

42657723361 is a deficient number, since it is larger than the sum of its proper divisors (3877974863).

42657723361 is a wasteful number, since it uses less digits than its factorization.

42657723361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3877974862.

The product of its digits is 1270080, while the sum is 46.

The spelling of 42657723361 in words is "forty-two billion, six hundred fifty-seven million, seven hundred twenty-three thousand, three hundred sixty-one".