218921248703 has 16 divisors (see below), whose sum is σ = 230229838080. Its totient is φ = 207763486656.

The previous prime is 218921248673. The next prime is 218921248717. The reversal of 218921248703 is 307842129812.

It is a de Polignac number, because none of the positive numbers 2^k-218921248703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218921241703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6218276 + ... + 6253382.

It is an arithmetic number, because the mean of its divisors is an integer number (14389364880).

Almost surely, 2^218921248703 is an apocalyptic number.

218921248703 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

218921248703 is a deficient number, since it is larger than the sum of its proper divisors (11308589377).

218921248703 is a wasteful number, since it uses less digits than its factorization.

218921248703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37246.

The product of its (nonzero) digits is 387072, while the sum is 47.

The spelling of 218921248703 in words is "two hundred eighteen billion, nine hundred twenty-one million, two hundred forty-eight thousand, seven hundred three".