254351442440 has 64 divisors (see below), whose sum is σ = 596487490560. Its totient is φ = 97502664960.

The previous prime is 254351442431. The next prime is 254351442451. The reversal of 254351442440 is 44244153452.

It is a junction number, because it is equal to n+sod(n) for n = 254351442394 and 254351442403.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 868019 + ... + 1123458.

It is an arithmetic number, because the mean of its divisors is an integer number (9320117040).

Almost surely, 2^254351442440 is an apocalyptic number.

254351442440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

254351442440 is an abundant number, since it is smaller than the sum of its proper divisors (342136048120).

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

254351442440 is a wasteful number, since it uses less digits than its factorization.

254351442440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991622 (or 1991618 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 38.

Adding to 254351442440 its reverse (44244153452), we get a palindrome (298595595892).

The spelling of 254351442440 in words is "two hundred fifty-four billion, three hundred fifty-one million, four hundred forty-two thousand, four hundred forty".