254072978538 has 16 divisors (see below), whose sum is σ = 518957573760. Its totient is φ = 82889056736.

The previous prime is 254072978531. The next prime is 254072978563. The reversal of 254072978538 is 835879270452.

It is not an unprimeable number, because it can be changed into a prime (254072978531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450483723 + ... + 450484286.

It is an arithmetic number, because the mean of its divisors is an integer number (32434848360).

Almost surely, 2^254072978538 is an apocalyptic number.

254072978538 is an abundant number, since it is smaller than the sum of its proper divisors (264884595222).

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

254072978538 is a wasteful number, since it uses less digits than its factorization.

254072978538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900968061.

The product of its (nonzero) digits is 33868800, while the sum is 60.

The spelling of 254072978538 in words is "two hundred fifty-four billion, seventy-two million, nine hundred seventy-eight thousand, five hundred thirty-eight".