254623980021 has 16 divisors (see below), whose sum is σ = 354291121536. Its totient is φ = 162354398976.

The previous prime is 254623980007. The next prime is 254623980031. The reversal of 254623980021 is 120089326452.

It is not a de Polignac number, because 254623980021 - 2¹⁰ = 254623978997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254623980031) 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, 640761 + ... + 959073.

It is an arithmetic number, because the mean of its divisors is an integer number (22143195096).

Almost surely, 2^254623980021 is an apocalyptic number.

It is an amenable number.

254623980021 is a deficient number, since it is larger than the sum of its proper divisors (99667141515).

254623980021 is a wasteful number, since it uses less digits than its factorization.

254623980021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329932.

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 254623980021 in words is "two hundred fifty-four billion, six hundred twenty-three million, nine hundred eighty thousand, twenty-one".