254115052403440 has 80 divisors (see below), whose sum is σ = 620068828822848. Its totient is φ = 96664624990208.

The previous prime is 254115052403347. The next prime is 254115052403447. The reversal of 254115052403440 is 44304250511452.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 254115052403393 and 254115052403402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254115052403447) 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, 398831989 + ... + 399468628.

Almost surely, 2^{254115052403440} is an apocalyptic number.

254115052403440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

254115052403440 is an abundant number, since it is smaller than the sum of its proper divisors (365953776419408).

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

254115052403440 is a wasteful number, since it uses less digits than its factorization.

254115052403440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798300826 (or 798300820 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 40.

The spelling of 254115052403440 in words is "two hundred fifty-four trillion, one hundred fifteen billion, fifty-two million, four hundred three thousand, four hundred forty".