245200155440 has 80 divisors (see below), whose sum is σ = 575687582208. Its totient is φ = 97118773248.

The previous prime is 245200155397. The next prime is 245200155451. The reversal of 245200155440 is 44551002542.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×245200155440³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 245200155397 and 245200155406.

It is an unprimeable number.

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, 9814004 + ... + 9838956.

Almost surely, 2^245200155440 is an apocalyptic number.

245200155440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245200155440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287843791104).

245200155440 is an abundant number, since it is smaller than the sum of its proper divisors (330487426768).

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

245200155440 is a wasteful number, since it uses less digits than its factorization.

245200155440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26166 (or 26160 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 32.

Adding to 245200155440 its reverse (44551002542), we get a palindrome (289751157982).

The spelling of 245200155440 in words is "two hundred forty-five billion, two hundred million, one hundred fifty-five thousand, four hundred forty".