249232118541 has 16 divisors (see below), whose sum is σ = 396294549504. Its totient is φ = 136226250864.

The previous prime is 249232118539. The next prime is 249232118543. The reversal of 249232118541 is 145811232942.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (249232118539) and next prime (249232118543).

It is not a de Polignac number, because 249232118541 - 2¹ = 249232118539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 249232118493 and 249232118502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249232118543) 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 in 15 ways as a sum of consecutive naturals, for example, 258003781 + ... + 258004746.

It is an arithmetic number, because the mean of its divisors is an integer number (24768409344).

Almost surely, 2^249232118541 is an apocalyptic number.

249232118541 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

249232118541 is a deficient number, since it is larger than the sum of its proper divisors (147062430963).

249232118541 is a wasteful number, since it uses less digits than its factorization.

249232118541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516008560.

The product of its digits is 138240, while the sum is 42.

The spelling of 249232118541 in words is "two hundred forty-nine billion, two hundred thirty-two million, one hundred eighteen thousand, five hundred forty-one".