42558777943 has 16 divisors (see below), whose sum is σ = 48037248000. Its totient is φ = 37349030880.

The previous prime is 42558777941. The next prime is 42558777971. The reversal of 42558777943 is 34977785524.

It is a cyclic number.

It is not a de Polignac number, because 42558777943 - 2¹ = 42558777941 is a prime.

It is a super-2 number, since 2×42558777943² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42558777941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2927230 + ... + 2941732.

It is an arithmetic number, because the mean of its divisors is an integer number (3002328000).

Almost surely, 2^42558777943 is an apocalyptic number.

42558777943 is a deficient number, since it is larger than the sum of its proper divisors (5478470057).

42558777943 is a wasteful number, since it uses less digits than its factorization.

42558777943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23742.

The product of its digits is 59270400, while the sum is 61.

The spelling of 42558777943 in words is "forty-two billion, five hundred fifty-eight million, seven hundred seventy-seven thousand, nine hundred forty-three".