249893819620 has 24 divisors (see below), whose sum is σ = 524786472000. Its totient is φ = 99955727712.

The previous prime is 249893819597. The next prime is 249893819641. The reversal of 249893819620 is 26918398942.

249893819620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1931731 + ... + 2057029.

It is an arithmetic number, because the mean of its divisors is an integer number (21866103000).

Almost surely, 2^249893819620 is an apocalyptic number.

249893819620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

249893819620 is an abundant number, since it is smaller than the sum of its proper divisors (274892652380).

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

249893819620 is a wasteful number, since it uses less digits than its factorization.

249893819620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225027 (or 225025 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 61.

The spelling of 249893819620 in words is "two hundred forty-nine billion, eight hundred ninety-three million, eight hundred nineteen thousand, six hundred twenty".