245153500040 has 128 divisors (see below), whose sum is σ = 591133593600. Its totient is φ = 91178680320.

The previous prime is 245153500037. The next prime is 245153500069. The reversal of 245153500040 is 40005351542.

It is a junction number, because it is equal to n+sod(n) for n = 245153499976 and 245153500012.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20806871 + ... + 20818649.

It is an arithmetic number, because the mean of its divisors is an integer number (4618231200).

Almost surely, 2^245153500040 is an apocalyptic number.

245153500040 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 245153500040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295566796800).

245153500040 is an abundant number, since it is smaller than the sum of its proper divisors (345980093560).

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

245153500040 is a wasteful number, since it uses less digits than its factorization.

245153500040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12175 (or 12171 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

Adding to 245153500040 its reverse (40005351542), we get a palindrome (285158851582).

The spelling of 245153500040 in words is "two hundred forty-five billion, one hundred fifty-three million, five hundred thousand, forty".