21110542054 has 32 divisors (see below), whose sum is σ = 37514016000. Its totient is φ = 8717523360.

The previous prime is 21110542027. The next prime is 21110542087. The reversal of 21110542054 is 45024501112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146397 + ... + 252295.

It is an arithmetic number, because the mean of its divisors is an integer number (1172313000).

Almost surely, 2^21110542054 is an apocalyptic number.

21110542054 is a deficient number, since it is larger than the sum of its proper divisors (16403473946).

21110542054 is a wasteful number, since it uses less digits than its factorization.

21110542054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106428.

The product of its (nonzero) digits is 1600, while the sum is 25.

The spelling of 21110542054 in words is "twenty-one billion, one hundred ten million, five hundred forty-two thousand, fifty-four".