136421522618 has 32 divisors (see below), whose sum is σ = 213335147520. Its totient is φ = 65354532480.

The previous prime is 136421522609. The next prime is 136421522621. The reversal of 136421522618 is 816225124631.

It is a super-2 number, since 2×136421522618² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9677171 + ... + 9691257.

It is an arithmetic number, because the mean of its divisors is an integer number (6666723360).

Almost surely, 2^136421522618 is an apocalyptic number.

136421522618 is a deficient number, since it is larger than the sum of its proper divisors (76913624902).

136421522618 is a wasteful number, since it uses less digits than its factorization.

136421522618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15662.

The product of its digits is 138240, while the sum is 41.

The spelling of 136421522618 in words is "one hundred thirty-six billion, four hundred twenty-one million, five hundred twenty-two thousand, six hundred eighteen".