21105754034 has 8 divisors (see below), whose sum is σ = 31700788608. Its totient is φ = 10538824500.

The previous prime is 21105754013. The next prime is 21105754037. The reversal of 21105754034 is 43045750112.

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

It is not an unprimeable number, because it can be changed into a prime (21105754037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7024382 + ... + 7027385.

It is an arithmetic number, because the mean of its divisors is an integer number (3962598576).

Almost surely, 2^21105754034 is an apocalyptic number.

21105754034 is a deficient number, since it is larger than the sum of its proper divisors (10595034574).

21105754034 is a wasteful number, since it uses less digits than its factorization.

21105754034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14052520.

The product of its (nonzero) digits is 16800, while the sum is 32.

The spelling of 21105754034 in words is "twenty-one billion, one hundred five million, seven hundred fifty-four thousand, thirty-four".