245551113540 has 144 divisors (see below), whose sum is σ = 752323178880. Its totient is φ = 64823155200.

The previous prime is 245551113529. The next prime is 245551113557. The reversal of 245551113540 is 45311155542.

245551113540 is a `hidden beast` number, since 2 + 4 + 5 + 5 + 511 + 135 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 245551113495 and 245551113504.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34683721 + ... + 34690799.

It is an arithmetic number, because the mean of its divisors is an integer number (5224466520).

Almost surely, 2^245551113540 is an apocalyptic number.

245551113540 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 245551113540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (376161589440).

245551113540 is an abundant number, since it is smaller than the sum of its proper divisors (506772065340).

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

245551113540 is a wasteful number, since it uses less digits than its factorization.

245551113540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9002 (or 8997 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 245551113540 in words is "two hundred forty-five billion, five hundred fifty-one million, one hundred thirteen thousand, five hundred forty".