118467420521 has 32 divisors (see below), whose sum is σ = 126204318240. Its totient is φ = 111078604800.

The previous prime is 118467420473. The next prime is 118467420541. The reversal of 118467420521 is 125024764811.

It can be written as a sum of positive squares in 16 ways, for example, as 101978035600 + 16489384921 = 319340^2 + 128411^2 .

It is a cyclic number.

It is not a de Polignac number, because 118467420521 - 2¹⁸ = 118467158377 is a prime.

It is a super-2 number, since 2×118467420521² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118467420541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19897481 + ... + 19903433.

It is an arithmetic number, because the mean of its divisors is an integer number (3943884945).

Almost surely, 2^118467420521 is an apocalyptic number.

It is an amenable number.

118467420521 is a deficient number, since it is larger than the sum of its proper divisors (7736897719).

118467420521 is a wasteful number, since it uses less digits than its factorization.

118467420521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6237.

The product of its (nonzero) digits is 107520, while the sum is 41.

The spelling of 118467420521 in words is "one hundred eighteen billion, four hundred sixty-seven million, four hundred twenty thousand, five hundred twenty-one".