118549432501 has 4 divisors (see below), whose sum is σ = 118554371404. Its totient is φ = 118544493600.

The previous prime is 118549432499. The next prime is 118549432513. The reversal of 118549432501 is 105234945811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 105234945811 = 67 ⋅1570670833.

It can be written as a sum of positive squares in 2 ways, for example, as 43787655025 + 74761777476 = 209255^2 + 273426^2 .

It is a cyclic number.

It is not a de Polignac number, because 118549432501 - 2¹ = 118549432499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118549432571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2433270 + ... + 2481511.

It is an arithmetic number, because the mean of its divisors is an integer number (29638592851).

Almost surely, 2^118549432501 is an apocalyptic number.

It is an amenable number.

118549432501 is a deficient number, since it is larger than the sum of its proper divisors (4938903).

118549432501 is an equidigital number, since it uses as much as digits as its factorization.

118549432501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4938902.

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 118549432501 in words is "one hundred eighteen billion, five hundred forty-nine million, four hundred thirty-two thousand, five hundred one".