42549478558 has 4 divisors (see below), whose sum is σ = 63824217840. Its totient is φ = 21274739278.

The previous prime is 42549478523. The next prime is 42549478583. The reversal of 42549478558 is 85587494524.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 42549478496 and 42549478505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10637369638 + ... + 10637369641.

It is an arithmetic number, because the mean of its divisors is an integer number (15956054460).

Almost surely, 2^42549478558 is an apocalyptic number.

42549478558 is a deficient number, since it is larger than the sum of its proper divisors (21274739282).

42549478558 is a wasteful number, since it uses less digits than its factorization.

42549478558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21274739281.

The product of its digits is 64512000, while the sum is 61.

The spelling of 42549478558 in words is "forty-two billion, five hundred forty-nine million, four hundred seventy-eight thousand, five hundred fifty-eight".