21839291254 has 8 divisors (see below), whose sum is σ = 35737022088. Its totient is φ = 9926950560.

The previous prime is 21839291219. The next prime is 21839291267. The reversal of 21839291254 is 45219293812.

21839291254 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496347507 + ... + 496347550.

It is an arithmetic number, because the mean of its divisors is an integer number (4467127761).

Almost surely, 2^21839291254 is an apocalyptic number.

21839291254 is a deficient number, since it is larger than the sum of its proper divisors (13897730834).

21839291254 is a wasteful number, since it uses less digits than its factorization.

21839291254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992695070.

The product of its digits is 311040, while the sum is 46.

The spelling of 21839291254 in words is "twenty-one billion, eight hundred thirty-nine million, two hundred ninety-one thousand, two hundred fifty-four".