42253069918 has 4 divisors (see below), whose sum is σ = 63379604880. Its totient is φ = 21126534958.

The previous prime is 42253069909. The next prime is 42253069939. The reversal of 42253069918 is 81996035224.

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

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 10563267478 + ... + 10563267481.

It is an arithmetic number, because the mean of its divisors is an integer number (15844901220).

Almost surely, 2^42253069918 is an apocalyptic number.

42253069918 is a deficient number, since it is larger than the sum of its proper divisors (21126534962).

42253069918 is a wasteful number, since it uses less digits than its factorization.

42253069918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21126534961.

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 42253069918 in words is "forty-two billion, two hundred fifty-three million, sixty-nine thousand, nine hundred eighteen".