249484684520 has 32 divisors (see below), whose sum is σ = 561359116800. Its totient is φ = 99790571328.

The previous prime is 249484684513. The next prime is 249484684541. The reversal of 249484684520 is 25486484942.

249484684520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1385861 + ... + 1555499.

It is an arithmetic number, because the mean of its divisors is an integer number (17542472400).

Almost surely, 2^249484684520 is an apocalyptic number.

249484684520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

249484684520 is an abundant number, since it is smaller than the sum of its proper divisors (311874432280).

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

249484684520 is a wasteful number, since it uses less digits than its factorization.

249484684520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206417 (or 206413 counting only the distinct ones).

The product of its (nonzero) digits is 17694720, while the sum is 56.

The spelling of 249484684520 in words is "two hundred forty-nine billion, four hundred eighty-four million, six hundred eighty-four thousand, five hundred twenty".