21106755254 has 8 divisors (see below), whose sum is σ = 34095527760. Its totient is φ = 9741579336.

The previous prime is 21106755247. The next prime is 21106755281. The reversal of 21106755254 is 45255760112.

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, 405899114 + ... + 405899165.

It is an arithmetic number, because the mean of its divisors is an integer number (4261940970).

Almost surely, 2^21106755254 is an apocalyptic number.

21106755254 is a deficient number, since it is larger than the sum of its proper divisors (12988772506).

21106755254 is a wasteful number, since it uses less digits than its factorization.

21106755254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811798294.

The product of its (nonzero) digits is 84000, while the sum is 38.

The spelling of 21106755254 in words is "twenty-one billion, one hundred six million, seven hundred fifty-five thousand, two hundred fifty-four".