254044040520 has 64 divisors (see below), whose sum is σ = 762237627840. Its totient is φ = 67735699200.

The previous prime is 254044040507. The next prime is 254044040521. The reversal of 254044040520 is 25040440452.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (254044040521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 746490 + ... + 1032150.

It is an arithmetic number, because the mean of its divisors is an integer number (11909962935).

Almost surely, 2^254044040520 is an apocalyptic number.

254044040520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

254044040520 is an abundant number, since it is smaller than the sum of its proper divisors (508193587320).

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

254044040520 is a wasteful number, since it uses less digits than its factorization.

254044040520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293086 (or 293082 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 30.

Adding to 254044040520 its reverse (25040440452), we get a palindrome (279084480972).

The spelling of 254044040520 in words is "two hundred fifty-four billion, forty-four million, forty thousand, five hundred twenty".