21054150034 has 16 divisors (see below), whose sum is σ = 32464303488. Its totient is φ = 10233233712.

The previous prime is 21054150001. The next prime is 21054150041. The reversal of 21054150034 is 43005145012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21054149990 and 21054150008.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47352 + ... + 210595.

It is an arithmetic number, because the mean of its divisors is an integer number (2029018968).

Almost surely, 2^21054150034 is an apocalyptic number.

21054150034 is a deficient number, since it is larger than the sum of its proper divisors (11410153454).

21054150034 is a wasteful number, since it uses less digits than its factorization.

21054150034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259089.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 21054150034 its reverse (43005145012), we get a palindrome (64059295046).

The spelling of 21054150034 in words is "twenty-one billion, fifty-four million, one hundred fifty thousand, thirty-four".