42436436698 has 4 divisors (see below), whose sum is σ = 63654655050. Its totient is φ = 21218218348.

The previous prime is 42436436671. The next prime is 42436436699. The reversal of 42436436698 is 89663463424.

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

It can be written as a sum of positive squares in only one way, i.e., 41276829889 + 1159606809 = 203167^2 + 34053^2 .

It is a super-2 number, since 2×42436436698² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42436436699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10609109173 + ... + 10609109176.

Almost surely, 2^42436436698 is an apocalyptic number.

42436436698 is a deficient number, since it is larger than the sum of its proper divisors (21218218352).

42436436698 is a wasteful number, since it uses less digits than its factorization.

42436436698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21218218351.

The product of its digits is 17915904, while the sum is 55.

The spelling of 42436436698 in words is "forty-two billion, four hundred thirty-six million, four hundred thirty-six thousand, six hundred ninety-eight".