245423502540 has 144 divisors (see below), whose sum is σ = 788418671040. Its totient is φ = 61582725120.

The previous prime is 245423502491. The next prime is 245423502553. The reversal of 245423502540 is 45205324542.

245423502540 is a `hidden beast` number, since 2 + 4 + 54 + 2 + 350 + 254 + 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 = 245423502495 and 245423502504.

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 47 ways as a sum of consecutive naturals, for example, 26559241 + ... + 26568479.

It is an arithmetic number, because the mean of its divisors is an integer number (5475129660).

Almost surely, 2^245423502540 is an apocalyptic number.

245423502540 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 245423502540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394209335520).

245423502540 is an abundant number, since it is smaller than the sum of its proper divisors (542995168500).

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

245423502540 is a wasteful number, since it uses less digits than its factorization.

245423502540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17952 (or 17947 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 36.

The spelling of 245423502540 in words is "two hundred forty-five billion, four hundred twenty-three million, five hundred two thousand, five hundred forty".