249059515020 has 96 divisors (see below), whose sum is σ = 703062097920. Its totient is φ = 65875380480.

The previous prime is 249059514967. The next prime is 249059515021. The reversal of 249059515020 is 20515950942.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (249059515021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4129441 + ... + 4189319.

It is an arithmetic number, because the mean of its divisors is an integer number (7323563520).

Almost surely, 2^249059515020 is an apocalyptic number.

249059515020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

249059515020 is an abundant number, since it is smaller than the sum of its proper divisors (454002582900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249059515020 is a wasteful number, since it uses less digits than its factorization.

249059515020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60455 (or 60453 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 249059515020 in words is "two hundred forty-nine billion, fifty-nine million, five hundred fifteen thousand, twenty".